Previously on Spirit Hero the Dark tournament came to a close and Izuku finally unlocked the final power he needed to open a portal. He, Raiju, and Modeus went back to his dimension after a tear-full farewell to his friends-

MHA World

After Izuku's disappearance everyone stopped talking to Ida and Uraraka for what they did to Izuku. Inko forbid Uraraka to call her mom and Eri never called her Mama again. All-Might tried to keep up possibility that Izuku's  alive, but he's been gone for about 5 weeks so hope started to die out. Right now Class 1-A headed to USJ for training, but were attacked by the LOV and they were losing because Izuku was the only one who knew their quirk weaknesses. Bakugo is pinned down by a Nomu with a blade hand and is about to die-

Shigaraki: Finish him Nomu!

Camie: Katsuki!

Aizawa: NO!

Katsuki: (Thoughts) Izuku I'm sorry

Nomu swing down, but is blocked by blade-

Izuku: Back off!

Katsuki looks up and see's Izuku holding his divine blade. He than pulls his divine blade up slashing the Nomu in half-

Katsuki: (Thoughts) Woah! (Speaking) Izuku?

Izuku: Hey Kacchan been a while.

Class: Izuku's Back!

Izuku: Hey Guys!

Shigaraki: How are you back? I sent you to another world.

Izuku: Yeah, you did and that has only made me even stronger.

Shigaraki: Nomu kill him!

Aizawa: Izuku get clear!

A flight Nomu goes for Izuku and Modeus, but Izuku just says-

Izuku: Raiju, go play.

Raiju turns into her Demon wolf form-

Raiju flies to the Nomu and sinks her teeth into his skin and pushes it to the ground. She begins to tear it apart-

Uraraka: Oh my God.

Mina: What is that thing?

Mineta: It's a monster!

Izuku just smiles and says-

Izuku: That's a good girl.

Shigaraki: Attack!

Multiple villains head for them and Modeus walks for them-

Izuku: Babe?

Modeus: I've got this.

Izuku: But, you're pregnant.

Modeus: Don't count me out just yet.

Modeus dashes for the villains-

She than leaps in the air and knocks them all down with-

Kaminari: Izuku is she single!?

Izuku: No!

Shigaraki: No, damn you!

Kurogir: Tomura we need to leave!

Shigaraki: You won't win next time!

They all disappeared and Izuku went back to his friends(Sans Ida and Uraraka). Uraraka went to give Izuku a hug, but he just dodges her and see's her fall to the floor. 

Uraraka: Izuku why'd you dodge? I'm your girlfriend!

Modeus: No, you're not (Walks to Izuku and he puts his arm around her) I'm his girlfriend and future baby mama. (Kisses his cheek)

Everyone: EHHHHHHHHHHHHH!

Ochako (crying) What do you mean that you are dating these demon?

Izuku: like she said I was gone for 5 months and I forgot about you and fell in love with Modues.

Aizawa: You weren't gone for 5 months?

Izuku: What then how long have I've been gone?

Aizawa: 5 weeks.

Izuku: 5 weeks!

Modeus: I guess time passes by differently in different dimensions. 

Camie: Wait a second, you're pregnant!

Modeus: Yep, with Izuku's child! 

Uraraka: (Tears flowing) WHAT!?

Timeskip

They soon head back to the bus and head back to the school. When they make it there Izuku see's his mom and daughter outside of the school. He steps off the bus and they see him.

Inko: Izuku!?

Eri: Papa!?

Izuku: Are you going to stand there or you going give me a hug?

Inko runs over and hugs her son-

After they breakup the hug, Izuku looks at her daughter. He kneels and holds his arms out. She runs and hugs her father-

Eri: (crying) I missed you, Papa.

Izuku: (smiles) I missed you too, Snowflake.

Modeus: So, is this the little angel you told me about it?

Eri: Who's this papa?

Izuku: This is daddy's girlfriend.

Modeus: I'm your new mommy! 

Eri looks at her Modues before giving her leg a hug-

Izuku: And guess what mom? She's having my baby!

Inko's eyes light up and she hugs Eri, Izuku , and Modeus. They whole family hugs while Ochaco watches with anger/jealously in her eyes. Little did this family know that their happy times are about to come to an end.

LOV Headquarters

Shigaraki is talking with Kurogiri, Dabi, Toga, and twice until a portal opens and 8 figures step through-

Shigaraki: Who the hell are you guys?!

Sensui: My name is Sensui. If you listen to me I can help you destroy the Hero Society forever.

Shigaraki:.........

Shigaraki: I'm listening.