Sora somehow ended up in a science class with all boys. Now, she's going to pitch in and help them enjoy school life by showing them her Girl Spirit!!

Also includes two extra stories:

- Sakurairo Koiiro

- Sore demo Yappari Kimi ga Suki
The energetic and cute Rin is actually an otaku! Unexpectedly, she meets a 3-dimensional boy with the same looks as her beloved, Chris-sama! Otaku love in full bloom.