FanHarem
Kinda hope he learns the following 8 gates - from gai Strength jutsu - from tsunade Lightning chakra mode - raikage, or scroll
The 8 gates would be from Dai since Gai shouldn’t be born yet, since Gai and Kakashi were kids and Minato is still in training so Gai would not know, and the Raikage right now is not the one that is in canon, but the one before, but A should have it, but he should still be training with B at the moment.