@BCS Yeah, he was talking about it with Saitou because she saw him drawing and he said he was seeing if it would make him more money since it's popular
The difference between male crossdressing and female crossdressing manga is pretty big, yet they share the same tag. I feel like separating them would make browsing that genre a little more succinct, as you might just be looking for one of the two but are seeing all the entries for both, like if...
Throwing this out there, maybe the spirit that possessed him and her is someone he used to know, and he feels responsible for their death, hence the "Am I allowed to have [this kind of feeling]" remark.