Sakasa ▽ Sankaku ~Watashi wa Ichibanshita no Tsuno~

Although Kanae is not good at socializing with others, she gets married and lives a modest life. Although communication with her husband is not good, she still thinks she should be happy.

One day, Kanae is happily reunited with Haru, a friend from her school days. Except it turns out that Haru has something more going on with Kanae's husband, Seiya...