Ayu and Hitsuji have been friends since kindergarten; but when Hitsuji tries to take them a step further, Ayu panics. Trying to maintain the blurry boundaries of their friendship proves difficult, however, when she soon has to watch helplessly while Hitsuji is gravitating towards the new music teacher.

(Source: Yuri Project Scanlations)

1. Flare
2. Saitei Hime to Dame Ouji
3. Lolita Summer End Roll
4. Ame to Chapatsu to Salamander
5. Hinata no Wana
6. Kimi ga Sennen no Kazashi zo Miru
7. Watashi ga Genshijin ni Nattara

The Japanese title is too long for the associated names so it is included here:
ボウソウガールズテキモウソウレンアイテキステキプロジェクト(B?G?M?R?S?P)

A mysterious transfer student arrives to the third year, class C for Hanazono Girl's Middle School.
Akane is a plain and simple girl who was tired of her over bearing Friends, and silently thinks that it is o.k for the world to be destroyed. However, all the girls of the class wake up to find themselves in a desolated school, with count down timers. Every girl is tied to another one, and this pair must survive a 7 day Battle Royal. As it turns out, Akane is tied down to the mysterious transfer student.

Friendships crumbles, hopes are lost and sanity is tested as the game starts of with a bang!

(Source: MU)