You know it fills my heart with happiness to have met and to have lived with you,

An image of a 15-year-old Ren with shorter hair could be seen standing under a tree

And yet as time goes on and older we grow it feels a little sad too. 

A beautiful young woman with pink hair could be seen smiling with her eyes closed

Now even though it hurts I'll hold these happy memories close. 

Ren could be seen blinking, before walking with the young woman 

And walk toward the day you leave my side and go somewhere I don't know...

The two could be seen separating with Ren kneeling on the ground with tears on his eyes, crying his heart out while screaming, the young woman looked back at him with tears on her eyes one last time before disappearing in golden dust

the screen showed the words 'Ren Cruz: Pride path' showing Ren all alone with a fox mask with wave-like designs and hollow eyes, holding a katana and a sheath similar to an udon-loving servant while water trailed from his sword and from behind him resembling a flowing river before it disappeared after being frozen by ice

And if the only thing I'm here to do is to take the place of someone else

Then I would rather have been born as a pebble living life all by myself. 

Ren could be seen, injured, dirty, and covered in grime, lying on the ground, several swords stabbed on the ground as water slowly rose from the grounds and covered him, hiding him in it before the water turned red

Cause then we'd understand each other's words and feelings too. 

And just maybe then the me I am wouldn't ever have known you.

Ren could be seen walking towards the young woman as corpses started to appear and for blood to reach out to his ankles, monsters, demons, humans, before the background behind him broke like glass to reveal different versions of Ren. the whole screen broke and revealed an older Ren with the aura of a king opening his eyes

The screen then showed Ren wearing priestly clothes hanging out with Joanna, Barbara, Gareth, and Circe. A Ren wearing pirate clothes drinking merrily with a wind sprite on his head, a dragon in front of him, a qilin, a pair of birds, a young man with black hair and spear, a young woman with horns and blue hair, a falcon landing on a perch, and a green dragon sitting on the corner near them. A Ren with red eyes wielding a red spear sitting on a kotatsu surrounded by happy people with a red and black color scheme, and a girl with black hair, suddenly, a young lady with purple hair could be seen going in with her hair done in cat ears. All the while Ren could be seen with his back towards them, with each vision he became bloodier, and his swords increased, eyes turning empty before being frozen in ice and scattered to a million pieces.

All I ever wanted is to pour out all my thoughts and to let you know just how I feel.

A montage of Ren could be seen hanging out with Joanna, Sapphire, Jeanne, Avrora, and his servant. 

Even so, I go and lie telling you that every thought I have is secret.

Ren could be seen with wide eyes as he saw Sapphire make out with Griffith, He then could be seen looking at as Jeanne became closer with Griffith, seeing her smile happily at him before looking at Ren, not noticing how her smile became brighter when she saw him. Jeanne could be seen asking Ren what was wrong while the young man just shook his head and walked with her. Ren is seeing off Avrora as she went to the airport to go back to Russia, hiding his tears as he hugged her back before waving. Joanna and Jeanne could be seen leaving back to France, giving him a kiss while saying goodbye.

I don't earn your praises all I ever am is cowardly I don't know why you stay here by my side

Ren could be seen being with Marco, Sunny, Rain, and his servant living happily while glitching out, showing him killing people by different mean going back to the happy scenes but this time Ren's smile was no longer genuine.

So why? Oh, why? Oh, why?

Ren could be seen standing in front of a beautiful garden, looking blankly, before it showed the happy memories he spent with the pink-haired blue-eyed young woman who smiled in front of him,

Even though the pain never ends and pulls me apart you smile there beside me.

All I ever wanted to do was reach out to you and say that I was happy.

And at once the world seems to blur and melt all away as I can feel the tears now. These miracles flooding me won't ever make it leave,

His servant hugged him tight as tears formed in his eyes, crying in her arms, hugging her back.

Because I can still hear your voice calling out to me.

Ren smiled as he finished crying and gently pulled her closer to him 

The scene changed to Ren being group hugged by his family and friends with his servant pouting a bit in jealousy. Ren just chuckled as Musashi pulled him to her chest, hugging him possessively.

And if you're going to go and lose your way and be all alone without a light

Then I will walk with you through pain and the doubt and stay here right by your side.

Musashi in spiritual form is looking over Ren, who was watching over Rain. The young girl was in the bed and looked in pain while Ren held her hand and a determined look on his face. 

Pretending it's okay we laugh and smile another day.

Ren ignored the talking Sapphire as his eyes grew colder before killing her servant, Ishtar with a well-placed trap as the slut was busy rubbing herself in school. He then knocked Sapphire out with a back fist to the back of the head and carved her command seals out, whispering one out.

We keep going on through tragedy as it starts again the same.

Ren could be seen commanding Musashi to take out the other servants while he personally kills the masters, taking their command seals, taking all their researches, money, mystic codes, and cutting out the skin with the magic crests to sell.  He disposed of the bodies by cement barrels, cement shoes, putting them on a wood chipper, etc. 

Even with prayers, and with vows that I make I'm haunted by these horrid dreams. 

Thinking that someday all the small pains you face and fear will take you far away from me. 

Ren could be seen smiling as he played with Rain and Marco before it glitched to see him leaning in front of an altar praying solemnly

All I am is useless though you put all of your trust in me I can't even protect what's by my side.

 So why? Oh, why? Oh, why?

Ren saw Rain dying in his arms, tears falling out of his eyes as he hugged her closer. Screaming and cursing out loud as his eyes lost their light.

The scene changed to Ren and his servant fighting against others before he froze as the young woman held him and they disappeared before they returned to just see that the whole world was burning while the bastard Griffith was living a happy life with his harem of 50+. Ren slowly worked, killing and cutting through the bastard and his harem sparing no one, using a demonic sword, he didn't even spare Sapphire as he impaled the two of them while they were having sex, cutting off their heads and letting them burn. Ren then looked up, rain falling on his face, mixing with his tears as they fell down.

Please I pray for all of the nights I can't make it through and drown away in guilty pain.

Ren stood up, holding his head, tears falling down remembering the remains of what happened. At the sight of unrecognizable incinerated corpses of his family and friends, he buried them alone while ignoring the heat of the incinerated world. Snapping at his servant, he saw the tears on her eyes as she returned them back to Teyvat before walking away. She looked back one last time with tears on her eyes, disappearing in golden dust leaving a katana for him.

There will be just as many times we laugh hand in hand and cherish every new day.

Ren woke up, seeing the smiling faces of his comrades and fellow slayers, Nezuko, Zenitsu, Tanjiro, Inosuke, Giyuu, Kanao, Mr. Urokodaki, and Master Ubayashiki.

Cause with you the world seems alive and colored and bright now even if I close my eyes.

For someone so precious oh whatever could I do?

Ren smiled as he walked to them, ignoring the blood and darkness, his eyes lightening.

Hey is it alright if I keep calling out to you?

The guys smiled as they welcomed Ren on a group hug before it changed to a photo with all the survivors smiling at the camera

A montage of Ren training, fighting demons, visiting Tanjiro's house with Zenitsu and Inosuke, training and eating together with them. Ren throwing Zenitsu off from trying to flirt with Nezuko before he got smacked by the younger girl on the head.

When at first I was born into this world we're living in

I had screamed and cried aloud to vanish and disappear.

A lifeless Ren could be seen holding a wooden sword, his hands bleeding as he trained

Ever since those dreadful days, I always have been searching

For the one, I'd someday meet.

You're the person that I need.

Ren stopped training as he saw Tanjiro asking him to train with him despite ignoring his requests for 5 months. Ren just sighed as a ghost of a smile appeared on his face, the two trained together for the remainder of the month and finally cut the boulder.

Ren could be seen having fun with Tanjiro, Nezuko, Zenitsu, Inosuke, Giyuu, and another nameless slayer. His eyes slowly gaining their light back and the smile on his face beginning to become bigger and more genuine.

Even though the pain never ends and pulls me apart you smile there beside me. 

Ren, heavily injured and bleeding, fought alongside the people around him facing a demon with several whips on his back. He could be seen being blasted back with a cut on his torso.

All I ever wanted to do was reach out to you and say that I was happy. 

And at once the world seems to blur and melt all away as I can feel the tears now. 

Ren could be seen turning away from the image of his family and friends having fun and walked away to the abyss, smiling gently as he saw her.

These miracles flooding me won't ever make it change because I can still hear your voice calling all the same. 

Ren smiled, stopping in front of her, and kneeled down, rubbing her head gently. Musashi, feeling the hand on her head looked at Ren, her beloved master, and cried in his arms.

Hey is it alright if I keep calling out your name?

Ren hugged Musashi tight, rubbing her back. The young woman bit her lips to stop the tears but hugged back as flames surrounded the duo. Ren just hugged her with a smile, happy that she was here.