Not stated. I love you
Haruno
(This will rustle so many, even thought I paid him the biggest complement)
Maybe Jiraya is Tobirama's little son.
White hair and tattoo on his face like Tobirama.
But it's a stupid theory , because Jiraya would have mentioned this filiation like Tsunade with Hashirama
A shinobi isn't necessary a descendant of clan. A shinobi can be a simple descendant of civilian family like Sakura Haruno.
When would he have mentionned it?
Tsunade kept the secret for 400 chapters.
No Tsunade mention that she is Hashirama's litle girl in the firsts chapters where she appear.
manga did not answered this for us so we dont know
senju in my opinion(fanfic)
kishi just forgot about this