i don't have a single regret in my life
我が生涯に一片の悔い無し! (Waga shougai ni ippen no kui nashi!)
Raoh's famous last words from Hokuto no Ken that he said before he uses the last of his life energy to punched his soul towards the sky to "returning to the Heaven" and bring true light back to the post-apocalyptic world, after he is defeated by Kenshirou.