This needs to keep with the spirit of Dragonball and have the big reveal be the worlds most comfortable pair of panties which she could never forget the feeling of on her skin.
It would have been a nice touch by the author to change kohai-chan's dialog to "this is bliss" when she's drunk as an homage to Alcohol is for Married Couples. As it stands though, the serialized stories are great.
The Yin is being punished by only getting buff bro demons for companions. Delayed punishment. 🤣 Also, best waifu is still best waifu even though she keeps on dying.