1. I want to make it clear that yes, Orochimaru will be part of the harem. Of course, in a female body. I don't know about you, but I feel very attracted to Orochimaru and taking advantage of the original work's hook of changing bodies, I decided to put him as her and add him to the protagonist's harem.
2. Some women from the Boruto series will appear in the fanfic, in fact, the protagonist will be rewarded for conquering them.
3. Not only women of the future, but also of the past. The protagonist will have the opportunity to go to the past and win over women, but in order not to mess up the timeline, a parallel world will be created as soon as he travels through time.
4. Women from the Naruto series and important derivatives in the protagonist's harem: Tsunade Senju; Orochimaru; Konan; Mito Uzumaki; Kaguya Otsutsuki.
5. Possible worlds that the protagonist can go to after the ninja world: One Piece; Power Rangers; Marvel/DC. But I'm still not sure if these will be exactly, I need to make a suitable sketch for these new worlds. Right now it's just a really good idea.