Jiraiya: Wasn't it me who had my wife taken away?
Probably:
Jiraiya, your wife was almost captured by Hanzo when she was pregnant with the child, but she was saved by your apprentice.
But your wife has lost her memory and thinks your apprentice is her husband.
Now your wife has run away and the children are gone.
But there is good news. Your wife is planning to have a second child, but it will be a red-haired one.
There is a timeline magic change. At least Nagato was 16~18 years old when he rescued Jin. I can't let Jin be a pedophile. And the Frog Team are now Jin's apprentices.
Thousand Hands looks warm but is actually a female ghost big sister x a damp and inferior male ghost red-haired puppy
The author's own xp twisted work
This does not support the statement that Jiraiya is a super great ninja. He is very powerful and shrewd, but he is pretty bad, even though I beat him.
Concept: The multifaceted nature of love