シンクロナイズ・ドリーム

Due to a strange experiment by Rumi, the main character and his childhood friend Youko keep on having the same ecchi dreams every night. In this dream world, the way he interacted with people after school changed. There was no sense of embarassment and he could act out everything he wanted to do with Youko in his (and her) imagination.

[from Micchi's blog]