Having more girls use him, The more powerful he becomes after all.This manga is on a mission to have every single female character become part of MC's harem, no matter who they are or what side they're on.
I'm guessing when she kissed him caused this to happen.Excuse me, but what the f**k? They better explain WHY and HOW. Did Kuusetsu save Fukuma by pulling her soul into Yuuki?
Yuuki is one hell of a lucky guy.
Literally has a inner harem...
Edit: Think all the Thunder Gods will end up inside of him?
Then once they're all inside him, they fuse together and transform Yuuki into the final boss. He will be so strong that there's no way he can be defeated, but then when Hyouka kicks him in the face he remembers the feeling of her feet on his face and he regains control of himself, so the author's foot fetish will save the day.Yuuki is one hell of a lucky guy.
Literally has a inner harem...
Edit: Think all the Thunder Gods will end up inside of him?
Dang. I figured it was discharge in the mouth when she sat on his face.We know Kuusetsu's inside him because she made him drink her saliva: https://mangadex.org/chapter/15707c73-016f-48b5-b43c-ddcc0660b14a/16
Then there's that scene where Fukuma "accidentally" kissed Yuuki: https://mangadex.org/chapter/84c43039-df5d-4543-8131-ab554ea0ebcd/9
Which is how Kuusetsu noticed her: https://mangadex.org/chapter/84c43039-df5d-4543-8131-ab554ea0ebcd/13
Maybe that's why she's inside him too?
Speculations, speculations...