Big Sis, Little Sis · Winter Promises and Heartfelt Vows Episode 4 / 4
Takumi navigates a complicated web of relationships as he balances his love for Saori with his bonds with Mii-nee and Yui. During the New Year celebrations, Takumi shares intimate moments with both Saori and Yui, the latter of whom asks him to ensure her sister's happiness despite her own illness. When Saori attempts to break up with Takumi out of guilt over Yui's condition, Takumi convinces her that their happiness is what Yui truly wants, ultimately strengthening their bond.
