Jack: IF YOU DON'T WANNA GIVE A S*IT ABOUT YOUR LIFE... WHY NOT LET ME TAKING CARE OF IT FROM NOW ON!!!

Toki: ...Why... Why are you-

That is what happened that day. (this art isn't what really happened though. but imagination of what occurred back few years ago...)

I don't wanna say what really happened though. It was a really close one. Toki would be gone if Jack is only just a minute late.

Whatever happened afterwards, with the big guy's support, he managed to overcome his darkest of his life where's no one else care about him other than his big bully who changed for him and keep his promises the small one said that day.