>>11337208
NTA but there was one succubus doujun about a meek little brother becoming domineering and turning his former brother into his little succubus sister, I've tried for ages to find it again but I think it got pulled from the panda and I can't locate it anywhere.

Aji Pontarou has probably made the gold standard version of TG'd guy becoming a dom. Aside from that it's a pretty barren field as there's only a select few wise enough to comprehend the beauty in this specific niche within a niche.