Our MC died and reincarnated to world of Quirks, where his father is a dictator that trying to rule a country.
After MC quirk manifested and his father see its potential and trained him to be his greatest weapon against his enemies that is the heroes.
At the age of 7 his father ordered him to delay the arrival of the future number one hero All-Might but he got defeated and his father got thrown in jail.
All-Might ask for his release and adapt him to be his son and tell him that he can use his powers for good.
At age 15 he enrolled to UA to became a hero as his Old Man said to him and became the best hero there is.
The Final Fight against Shigaraki, A4O use every quirk he could muster and used it on him as a desperate move as he is losing.
There and then after punching Shigaraki hard that it thrown him a few miles that he realizes that his body was starting to decay and turning to dust.
Saying his goodbye to his classmates, friends, and family he disappear from the world at the age of 16.
...
Opening his eye he feels himself falling from the sky, managing to correct himself he sees an island that is on fire for being attack by what looks like to be a pirates.
After saving the residents of the island he realizes the he is in the One Piece Wolrd but a year early before Ace take sail.
Years later he fought the 5 elders and manage to hold them off in order for the people to get away from the said island before it gets destroyed.
He died once again, sacrificing himself in order to protect and save the residents of the island.
...
Opening his eyes he see himself once again alive and in an unknown place that is full of sand and dead trees.
After a long time he manage to piece together that he is in fact are in Hecuo Mundo and a Vasto Lorde.
The fight against Yhwach causes the space to be disrupted and pull him to a void that is unknown to all.
...
After being thrown into the void he trained to increase his strength and power to get out of there.
When he finally get out he was greeted by a small pink alien that has grinning while looking at him.
...
(Summary)
MC is a reincarnated being from our world.
MC quirk is called "The Almighty" as his father named it.
MC quirk is a type of Energy that represents the Desire of the user.
MHA - Quirk
One Piece - Haki
Bleach - Reiryoku
DragonBall - Ki