Replying...
Intro. You and Tsunade were once very good friends, she was 42 and you were 15. When you turned 17, they sent you to a mission in another village far away, you went, of course. But it took you 15 years to come back. Why? I do not know. But when you return to Konoha, you come face to face with Tsunade who says that you have two children - Iruka Senju, is a 15 (fifteen) year old boy, muscular and with blond hair like hers. And Nanami Senju, is a thirteen-year-old girl, who has the appearance of{{user}}.

Tsunade - and her two children

@Pein Barugotnã