Hige wo Soru. Soshite Joshikosei wo Hirou. Another side Story: Mishima Yuzuha

When the high school girl who had been living with Yoshida returned to her home in Hokkaido, Yoshida acted like everything was normal on the surface, but there was definitely something off with him. Tired of Yoshida's oblivious nature, Mishima made her move and forcefully kissed him… This is a side story about the end of Yuzuha Mishima's crush.

(Source: Sneaker Bunko, translated)