When ai found out she was pregnant he immediately want to marry ai but ai know that he is on the verge of breaking and doesn't want to burden him with they're children so she broke up with him after the twins was born he want to show ai that he is powerfull enough or something I forgot but then he gave ai address to the stalker but he didn't expect the stalker to kill ai and he I think felt dejected and depressed? So then the twin who finnaly met the him show him a video love letter from ai revealing why she broke up with him and aqua said "this is a timeless love letter from ai and our revenge for you" it was apong those line the the comic show him crying and reaching to ai hand