Looking for the title of this one-shot wedding manga

does anyone remember what that oneshot manga where the guy is at the wedding of his unrequited crush and is seduced by her younger sister who tells him that if he tells the bride that he never liked her, she would have sex with him? Then they do it at a hotel?
Anyone know the title of that manga?
nvm, found it. Another Hisasi title.

Sugisaranu Hito.
dam I love this author's works