Just some important before reading this story:

The Kaneki I'm using is Post Dragon Kaneki, so he has the markings on his face. His arms and legs are covered in red scales, and his left hand only has 3 misshapen fingers. He is gonna be seriously OP in the BNHA world. I'll list some of his abilities.

Pseudo-electrokinesis so he can generate lightning. 

Pseudo-pyrokinesis so he can generate fire like Tatara.

Super Sense of Smell like in ForgottenAngerCourter's fic

Body temperature manipulation so he can control his body temperature. Ken likes to make his body temperature cold since Enji is fond of the cool. This is also why most of their children have ice quirks. Ken can not generate or control ice.

Healing by transferring his rc cells into another being, he can heal any injury in a matter of seconds.

Rc grenade, which are rc cells condensed into a ball and can explode upon contact once thrown.

Orphan/Golem creation so Ken can create golems called orphans, but they are extremely violent, wanting to kill and eat everything in sight. Ken can't control them once they've been released, so it's not a skill he uses. They have to be destroyed in one go. 

Kagune detachment so Ken can detach parts of his kagune to make walls, trap, and even weapons. 

Some facts about the Todoroki family:

Ken's quirk is listed as Regenerative Cells. 

Ken is 5 years older than Enji so he's 50 while Enji is 45. Enji was 18 when he first met Ken who was 23. Enji had just started his own hero agency and had no employees until he hired Ken as an administrative assistant or secretary (still deciding). They decided to get married 2 years later. 

Their love story is also considered very romantic when told.

Ken and Enji are absolutely infatuated with each other, but Enji tends to hide it from everyone. The Flaming Sidekickers love to tease their boss about this.

Their children are Touya (23), Fuyumi (22), Natsuo (19), Shouto (15), and Ichika (5). Ichika is the only one-eyed ghoul while the rest are half-humans. The eldest four don't suffer from accelerated ageing since Ken is a perfect ghoul, and they are quite powerful.

Touya still has low resistance to the heat, so his quirk still burns him. He has a low version of Ken's regeneration, but if he keeps taking damage either from his quirk or a villain, then he stops healing after a while. 

I think that's it. I might add more.