She is a Jealous Sister (2022)

[SSIS-469] Konan Koyoi – Jealous sister who has been in love with me since before, tempts me with no bra.

Yuki Yudzuru has known the Koyoi sisters for many years, and one day he begins to date the younger sister.

This was very unexpected for the older sister Konan, who already had a crush on Yudzuru. Her brain shortcircuits with jealousy, and she instantly decides to act on it.

She proceeds to seduce him by not wearing any bra in the house, giving him a glimpse of what he’s missing, which works so well.