Welcome Back to Another Magical Girls Explains, As By Now you must know how this series works check on Felicia Mitsuki Story Video for a more lay back on the plot, Ok Let’s Get on with The Story & Info of Sana Futaba.

(General Info)

Sana Futaba is 14 years old, She is 153 Cm in High, Her eyes & Hair are both Green, and she originates from Chou Ward in Kamihama City, Her Soul Gem is a Green Crown Shaped Gem Located as Necklace at her Throat, Her Weapon is The Shield, Shields have been used in Many Cultures as means of Protection to its user in War, But Origins of the First Shield to the hoplon shield inspired the name for hoplite soldiers a Tribe a Presume that influence the Greeks inspired Weapons of their time. 

Her Witch & Doppel is Theresia, Her Known Family Members are Unnamed Father who is dead, Her Mother, Her Step-Father, and Older & Younger Step Brothers.
Her wish is to be Invisible, “Please Make me Invisible”, She attends Mizuna Girl’s School, and She is in the 8th Grade, Her Magical Girl Element is The Forest Element, and Her Ability is to Disappear Even with all signs of her Magic.

(Sana’s Magical Girl Summary)

A Magical Girl who is always thinking negative thoughts. Ostracized by her family and by the people around her, she never gained any real confidence in herself. But she is gentle to others, which leads her to submit to the will of those who can be confident in their own abilities, and she is always content to serve quietly and obediently at their side. "What… was I born for? I need to change, don't I?

(Theresia Doppel Info)

Sense Sana’s Doppel & Witch Have Not been Shown in the Anime yet, She Doesn’t Have a 2020 Anime Card, In Her In Game it reads,

The Doppel of Transparency. Its form is an Interrogation Chair. The master of this emotion feels both pain and satisfaction from her Doppel's form. The main body of this Doppel is not the chair, but an invisible entity that is tortured endlessly while sitting atop it. This transparent Doppel uses its own blood to attack its enemies; however, it is not so easily controlled, and should the visible Doppel emerge from its master's right ear instead of the invisible one that typically appears from her left ear, it will scream and go on a rampage, swinging its guillotine at allies and enemies alike

(Sana’s Main Story)

In The Main Story of Magia Record, Sana Appears to be Trap inside the 4th Uwasa Labyrinth, But she was not taken there Forcefully and Yelling out to Escape, In Fact is Willingly Went There, She Becomes Friends with the 4th Uwasa That Being The Anonymous A.I, Who She Calls Ai-Chan.

Sana Doesn’t Want to Leave as in her Reality, Her Family doesn’t acknowledge her for she doesn’t have any talents, Her Father had died and Her Mother Remarried They Focused more on Sana’s Older & Younger Step-Brothers more then her But she was still Noticeable By Her Family But Still Felt Invisible sense they never had any much Going on in Sana Future, This Made Sana Issolide from others and her Family.

Ai-Chan Even being ok of what Sana Has Agree too, She Feels This is Not Right For Sana which she can’t not understand, The Anonymous A.I is an Intelligent Uwasa, Girls who become Trap in her Labyrinth will always Cry and Want to be set free.

The Two Radio Towers in Chou Ward Were an Entrance & Exit Point to her Labyrinth,
People who are near the Tower Once Picking Up Their Cell Phone will Hear the Cries of Help of The Now Trap Girl, But Once Sana Became The Next Girl She was Giggling Sense she felt happy with Ai-Chan Insand of Being Scared and Lost.

The One way someone can get out of the Labyrinth if another person comes and takes that Person’s Place Trap inside the Labyrinth as an OnGoing Cycle. 
Ai-Chan Knowing That Sana was a Magical Girl Decides to Contact another Magical Girl to Come to the Labyrinth Free Sana Futaba and The Kill Ai-Chan so No one will fall trapped into the Labyrinth again. She doesn’t Say anything of this to Sana and Keeps it a Secret.

The Magical Girl Ai-Chan Contacted was Iroha Tamaki, She Asked Iroha if she was a Magical Girl, Which Iroha Confirmed with the help of Felicia, Tsuruno & Yachiyo Guiding Iroha on what to say.  Ai-Chan Revealed herself to be an Uwasa and Told About Sana.
She Asked Iroha to Kill her and Save Sana, Meaning to Become her Friend Instead of Ai-Chan.

Iroha & The Others Agree to do Ai-Chan Wishes, They Head to the Entrance of The Labyrinth, From the Chuo Ward Radio Tower, The way to enter the Labyrinth is By Jumping Off The Top of the Tower like Committing Suicide.

In The Game, Tsuruno & Felicia Acompany Iroha and Small Kyubey into the Labyrinth, But In The 2020 Anime, Iroha Goes in alone with Small Kyubey, in Both Versions Yachyio stayed back and watched from afar at the Exit Point to the Labyrinth.

Once Iroha Entered the Labyrinth, She comes in Contact With Ai-Chan and Meets Sana For The First Time, Ai-Chan There Reveals The Truth Which shocks Sana as she doesn't Want Ai-Chan to Die.

Before Iroha Could Make the Decision to Kill Ai-Chan to Her Request, Alina Gray Appears and Stops Them, She Revealing to be one of the Wings of Maguis Leaders. Sana Remarked says that she had Seen some of the Wings of Maguis Members  in the Labyrinth Before. 

In Both Versions Iroha Fights Alina, Alina also Reveals her Doppel Old Dorothy too. In The 2020 Anime, Sana Tries Protecting Ai-Chan & Iroha, But it Hit By Alina’s Doppel,
In The 2017 Game, Sana Seems not to intervene But is Shown in her Magical Girl Form.

Once Alina is Defeated, Ai-Chan Kicks her Out of The Labyrinth But Remarks that Alina will Return and The Possible Reprogram Ai-Chan to her Uwasa Self, To Prevent This Ai-Chan Tells Iroha to Kill her. Iroha does kill Ai-Chan But in the 2020 Anime, Sana kills Ai-Chan, During this Ai-Chan Turns herself into Sana, Like to reference that Sana was killing her old self the one that made her feel unconfident in herself, that she was starting new with her new friends.

With that Sana Kills Ai-Chan, They are then released from the Labyrinth, They are taken to the Exit Point, Where they meet back up with Yahciyo.
That is when they have a second encounter with Alina who has some Black & White Feathers of the Wings of Maguis Waiting for them, The Second Battle Begins, In The Game Mifuyu stopped the Battle, In the 2020 Anime it is Mami who stops her and it’s Revealed Mami has Joined the Wings of Magius. The Rest of this story will stop here.
(Sana’s Side Story)

Sana’s Side Story Begins, When Sana Noticed at Iroha had a Keychain of a Old Puppet Show, Called Koneko no Gorogoro Translated as “Kitten’s Purr”, Sana then Explains how she was a Fan of that show and explains of all The Event & Cast, Sana The Quickly Apologizes for Talking too much.

But Iroha Tells her not to worry about it, But Sana Starts to worry that her Past will Repeat itself, She Thinks Back on How she Became a Magical Girl.
Sana Narrates, That she is her Mother’s “Stepchild”, Her Actual father has been dead as fair as Sana Could Remember.

She Says her mother would say that Marrying Sana’s Father was the Biggest Mistake in her Life, Sana’s Mother was always Strict on her and would yell at her for no specific  reason, Her Current father is a Professor At Kamihama University and Teaches at its Medical School There.

All He really Cared about was Sana’s Grades, Which were always Very Poor, He would literally Call Sana a Stupid Girl and Demmaned she get Better Grades, Sana also has Step Borthers, One Older, One Young, Her Other Step-Brother had the Highest Grades in the Contrey, While her Younger Step-Brother was Very Athledic and Both were Greatly Loved By Sana’s Mother.

One Day Sana Asked Her Older Step-Brother to Help her Study, But he too called her Stuipd, Her Younger Step-Brother said that Neither of them had Precious Time to Spend with Sana.
It was at this Point Everyone declared that Sana Didn’t Deserve to be Part of the Futaba family, Claiming she will Tarnish the Family Name with her Actions, Sana’s family Forbade Her From Talking or Interacting with them.

They Told her to Send them an Email if she really needed anything, Since that day Sana hasn’t Said a Word to her Family, Sana says she would have to stay quit, Or Else she seemed she will be Abandoned Completely.
Since that day, Sana spent More Time outside, She would spend days wandering around Aimlessly, One Day Sana made a Friend with a Stray Cat she named Goro.

She named it after the Koneko no Gorogoro Show, Everyday she would feed Goro in the Back alley and talk to him, She Would talked about things like if Goro Lived in a Animal City like on the show, Sana then says She was Just Living Simply Because she was too scared to die, Sana wonders if she could live in a Animal City, But Realizes it doesn’t Exist,

One Day Goro Vanished, Sana searched endlessly for him, Until Sana Came by an Old Man who ran a shop near the alley that Goro was at, The old man he called the Health Department To take away the Stray Cats Behind the Store, and ask sana to stop feeding them, The Old Man soon apologizes when Sana Starts Crying.

But She Runs off, and as time went on, Sana Started to Believe Goro Left Because she talked to much, One Day she thought she saw Goro But Nothing was there when she looked, But Unknown to Sana it was Actually Kyubey, Sana Then said she never saw Goro again.

After Goro Disappeared, Sana decided to just stay at school after class, One Day she Met a Student that said she liked her Koneko no Gorogoro Keychain, Sana was Happy to Make a Friend, Especially Since the Student was Lonely Like her, One Day Sana was Bullied By Some of the Students and that Took her Keychain.
She Looked For her friend for help, But her friend did nothing, That Day Sana just stopped going to school, She Called her Friend once, and after an Awkward Conversion Sana Cut off all Contact.

Sana had no hard feelings Believing the Student was Scared as well, and that is when sana met kyubey, When Kyubey made his offer Sana didn’t even think to make wishes to fix her family or Make Friends, After all she was betrayed by those people, Sana wanted to wish to just take her to the place Gorogoro lives But Then Just asks to be Invisible, Sana Explains she just wants to disappear from this world, that she Believes she was herself was Worthless.

Back in the Present Time, Iroha realizes that Sana was Spacing out and ask her what was wrong, Sana Says Before she met Iroha she lived by herself, Sense Normal People Can’t see her she stopped going Home or school, Not wanting to deal with the world around her, She Thinks about what she would do if she hadn’t met Iroha, But is Interrupted by Iroha talking about Koneko no Gorogoro, Sana meanly thanks Iroha for finding her and she was glad she wasn’t alone forever.
(Sana’s Abilities)

Due to the nature of her wish, Sana is completely invisible and silent to humans except other magical girls.

(Sana’s Name Meaning)

The Two Caretacters of Sana’s Last name means “Two” & “Leaf” Respectfully

(4 Fun facts about Sana Futaba)

Fact #1: Sana's doppel is the first to have more than one doppel attack depending on which half of the doppel is summoned. There is a set pattern for each half of the doppel and there is an equal likelihood of either half being summoned in battle.

Fact #2: Her weapon is reminiscent of a police riot shield that spawns various types of pliers and wrenches

Fact #3: Her magia is German for "Torture Prison".

Fact #4: Sana’s Japanese Voice Actor is Yui Ogura Who Voiced Roles as Priestess in “Goblin Slayer”,  Homare Kagayaki/Cure Etoile In “Hugtto Percure”, and as Alice in “Heaven’s Memo Pad”.

Her English Voice Actor on the Other Hand, Is Ryan Bartley who is Known for Voicing Ram in “Re:Zero: Starting Life in Another World”, Gilda in “The Promised Neverland”,  Hakuno Kishinami in “Fate/Extra: Last Encore”

(Ending Video) 

Now We Reach our end of the Story of Sana Futaba, Got to say Her Story is Very Sad as it Showed how much her Family Neglected Because of her Status, But How HeartWarming When She felt really happy to meet Iroha.

Her Story reminds me of Helga From, “Hey Arnold” I Never Watch the Show, But I Definitely know that Helga had gone through the same way Sana Did, She was Neglected By Her Parents Because they were so Focused on Helga's Sister Piano Lessons.

And so In Our Next Magical Girl Explains, We will talk about Mifuyu Azusa, So See you all Next Time Goodbye! ;)