I narrowed it down to two quirks. Let me know if this works for you - you want to add/remove anything.
One for all: While he can't talk to the ghosts inside, he may rely on them for enhanced strength. He can use 12% of his quirk without hurting yourself and 20% is painful but bearable for a short period. If you use 20%, roll me a 1d2. If you get a 1, Mori is fine. If you get a 2, ping the Heart Runner for Heart Runner's choice.
Black Whip: He can manifest black strings of energy to spiderman swing around and binding people/things. For every comment you use this ability, roll a 1d5. If you get a 1, it's fine. If not, you get to rampage for 6 comments. Have fun!
Re: Intensity #death-t
One for all: While he can't talk to the ghosts inside, he may rely on them for enhanced strength. He can use 12% of his quirk without hurting yourself and 20% is painful but bearable for a short period. If you use 20%, roll me a 1d2. If you get a 1, Mori is fine. If you get a 2, ping the Heart Runner for Heart Runner's choice.
Black Whip: He can manifest black strings of energy to spiderman swing around and binding people/things. For every comment you use this ability, roll a 1d5. If you get a 1, it's fine. If not, you get to rampage for 6 comments. Have fun!