When Akihiko was a high school student, he confessed his love to his childhood friend Kumi, but he fell in love with him. After that, Akihiko, who passed the university's Faculty of Science, receives a live invitation from Kumi, who is active as an underground idol. However, after the live, I witnessed the manager and Kumi starting to get involved at the venue. Disappointed Akihiko will work on joint research with Eri, who was the professor's mistress. Then, he develops a new drug, Exo Squall, that will increase his love.

Pink zone 2: Inran to enban

Mana for Android developed by Polar Bone, a character development company. Once completed, it is planned to be mass-produced and named "Mana Plan". Takuma, who created the character design and participated as an observer in this three-dimensionalization plan, was using this prototype as a cohabitation partner. Meanwhile, heroine Mana's rival character Jun was also one of those born from the previous plan, like Mana.　