Fragile and Empty
Hanabi and her own weakness has hurt Sanae. Before leaving Karuizawa, the two of them make a promise to become friends again someday. The new semester begins, and despite telling Akane his feelings, Mugi is still letting her toy with him.
Aired 17/03/2017EP 10 - Fragile and Empty

Scum's Wish
Hanabi has loved her older friend Narumi for years, but she’s still in high school and not only is Narumi now her new homeroom teacher, he’s also clearly in love with the music teacher, Akane. And as awkward as being the unwanted third in a romantic triangle can be, things become even more twisted for Hanabi when she learns that another student, Mugi, is in love with Akane. That leads to a strange idea: since the ones that Mugi and Hanabi are in love with aren’t available, the two unrequited thirds start to explore the idea of becoming each other’s substitute surrogate relationship. It’s not about romance, of course. Just sex and convenience.
(Source: Sentai Filmworks)