ImagineMaker
i believe only kaguya or konan could match his personality , the other girls are less mature , maybe tsunade could fit the bill if she is less agressive toward him but even so our mc need to deal with her mental health hehe our mc gonna be a scientist and psychatrist maybe it could be fun but as i said the safest choice is konan or kaguya
this is a great fanfic but if it's made into a harem it's like some trash naruto fanfic out there have a look at some good novels it's full of good plot and action and spiced with romance makes it perfect anko may be kind and natural Tsunade might make it a bit awkward but if the writer can make it good that's great
Tsunade would be perfect since she has been alone for almost 20 years and in the canon she was also single, besides he was a psychiatrist and he will know how to handle such a woman hehehe and if she is a harem it could be anko or also shizune since she followed Tsunade all those years and was literally single all her life hehe
After reading the comments I am once again reminded why polls are such an unnecessary dumb bs that should never be done coz we all know what's gonna happen after authors do this kinda thing here in Webnovel. The brainless horde will come and bring more of their species here that's gonna comment the exact same thing. We all know what's gonna be the outcome of the poll, it's always the same outcome.