Osananajimi wa Shuuchaku Love Monster!

Mitsuki's troubled. His friend since childhood, Minoru, is stuck to him like glue every moment of the day, be it at lunch break, when he's taking a bath, or when he's sleeping. There's no way this isn't weird...!! To top it all off, he finds out that his friend has a trauma after he brings him to a mixer...!! Minoru asks him to help him practice to fix it, which somehow leads to Mitsuki having his tip rubbed in the restroom while his friend calls his name in a feverish voice. "We're best friends, right...?"

(Source: Mobile Media Research)