Bra to panty: Hentai ga ippai

In the first half of the Naruse part, a man who has become a bra because he loves bras has withdrawal symptoms from his sister's big breasts, and is treated with his sister's small breasts. And in the second half of the Kondo part, a man who likes panties so much that he ends up in panties is severely punished by an S beautiful girl.