I"s Pure

Christmas Eve night. Seto Kazuki was walking through the illuminated streets with his best friend Teratani. Today, they're at a Christmas party with Iori Reedzuki and Morisaki. Kazuki fondly remembers the time when Iori was still only an admirer. The spring of his second year in high school, when he could only stare at Iori practising in the drama club...

Kazuki is suddenly confronted by his childhood friend Itsuki, whom he has not seen in four years, in his underwear. However, Kazuki's feelings for Iori grow, and he tells her that his relationship with Itsuki is "just a childhood friend". On a school trip, Kazuki is alone with Iori and tries to pluck up the courage to confess his feelings to him, but just then a fire breaks out in Itsuki's flat and he receives a call that Itsuki has not been seen since...

Kazuki hugged a sobbing Itsuki. Since then, he is confused by his wavering feelings. The photography club decides to organise a contest and Iori is chosen as the school's representative, but it is a trap set by Samejima and his friends, who were expelled from school for a voyeurism scandal. Iori is in danger in her swimming costume in an abandoned building. Kazuki, who was on a date with Itsuki, learns of Iori's danger and heads for the abandoned building. Then Itsuki decides to make a serious confession...