Tansan Renai Sui
炭酸恋愛水
Eru Jinnai has feelings for Seiya Mitsutani, who is her teacher. Mitsutani is disliked by students at the school, so Eru sees no rivals for his attention. However, he only sees her as a student and does not reciprocate her emotions. Eru must find a way to make Mitsutani view her differently.