Kuroko is always going to help out his friends, but... "Since it's a direct request from you, I'll spare no effort."

Maybe it's a little weird to promise your crush to look after his soon-to-be(?)-ex, but a tight-knit group like theirs was always bound to be a little bit incestuous. "I suspect he may get worse about his perfectionism as we get older, but I'll remind him it's okay to simply be."