Kanojo Koukan: Konna Kotoni Naru Hazu Janakatta

Ushizawa convinces his now very recent ex-girlfriend, Kise, to try swinging, hoping that it will help put an end to their fights and bring them back together. While everything seems to have gone well at first, Kise realizes what she really wants from the experience… .

(Source: Irodori Comics)

Note: Released at Comic Market 103