A young boy, about 7 years old, could be seen running out of the Touto Institute of Advanced Matter Physics. He was chasing after the red-colored armored stranger who had just murdered both of his parents.
"Hey! Get back here, you monster!"
The murderer then stopped running and just stood in place with his back turned, terrifyingly still. He then began to laugh and turned to face the child. The evildoer was holding what appeared to be a gun in his right hand and he had a snake-shaped visor on his face and a snake symbol on his chest plate.
"So, Kiryu Jr. thinks that he can stop me?"
"No, I know I can't. I just needed to get you out in the open where people could see you and call the heroes and police!"
"I see. It figures that you'd be able to hatch a plan like this, considering who your parents are, I'm sorry, were."
"I know why you killed my mom and dad, you're after the Pandora Box!"
"You keep on surprising me kiddo! Say, you wouldn't happen to know where it is?"
"You're the last person I would tell!"
The man sighs at the boy's declaration.
"Well, I can't just ignore that you've not only seen me, but you also saw me kill your folks."
The man then grabbed the young child, trapping him in a chokehold. He then placed one of his hands in front of the boy's face and smoke began coming out of it.
"I really don't want to kill a kid if I can avoid it, so I'll just take away your memories from when you ran out of the building to right now. However, I will leave you with this. My name is Blood Stalk. Remember the name of the man who killed your parents."
The kid passed out from whatever it was that Stalk did to him and Blood Stalk then left the scene. The civilian onlookers rushed to the boy's side, one man among them said:
"Somebody call the police!"
Two hours later
Sento Kiryu woke up to the sound of ambulance sirens in the background. He was resting in a stretcher, and noticed that his parent's friend Soichi Isurugi and his daughter Misora were at his side, Soichi looking quite sad and Misora in tears.
"Soichi-san, what's going on?"
Mr. Isurugi looked at Sento with a patient look and said:
"Sento-kun, there is no easy way to say this, your parents were murdered."
All of a sudden, Sento's memories came flooding back to the surface, as the last thing he could recall was seeing the armored man stab both of his parents with some kind of blade after he had threatened them and they refused to comply with his demands. Soichi then told Sento something that would stay with him for years to come.
"What happened to Shinobu and Kyoka wasn't right, they were good people. Sento-kun, your parents told me that they stated in their will that if anything were to happen to them, that you were to be placed under my care as they named me your godfather." Sento, still fighting back tears, continued to listen to Mr. Isurugi. "Come live with us, Sento-kun!"
Misora chose then to speak her mind.
"Sento, I know that you just lost your family and that everything is very painful and confusing right now, but we'll help you! After all, you're my best friend!"
Misora then jumped at Sento and gave him the biggest hug that she could muster. Sento returned the hug with what strength he had left. He thought about it and said:
"Okay Soichi-san, I'll stay with you and Misora, you guys are the only family I have left."
Mr. Isurugi got up from the bench he was sitting on and placed his hand on Sento's shoulder.
"It's going to be okay." Seeing that things had calmed down somewhat, Soichi told Sento and Misora he was going to give a statement to the police as him having been friends with Sento's parents meant that he might have some information that could help the investigation. The fact that there were no heroes in the area when this had occurred placed the responsibility of finding the one responsible on the officers of the law.
"Misora, keep an eye on Sento-kun for me, will you?"
Misora wiped the tears off her face and smiled at her dad.
"Of course, daddy! I'll take good care of him, promise!" giving her dad a thumbs up.
"That's my girl."
As Mr. Isurugi was walking out of the ambulance, Sento remembered one last thing from that night. For whatever reason, he somehow knew the name of the monster who took his parents from him. He muttered under his breath, "Stalk".
Soichi heard what Sento said, even though he was a couple of feet away from the ambulance by now, and he smirked.
Name: Sento Kiryu
Quirk: Nebula Gas - A mysterious quirk of unknown origin. Strange that he has a quirk, seeing as his parents were quirkless.
Name: Misora Isurugi
Quirk: Quirkless.
Name: Blood Stalk
Quirk:?