Call Me Tonight (Call Me トゥナイト)

Ryou has a problem. Anytime he enjoys his own company, he wakes up to see his room in complete shambles. He seeks help from a hotline specializing in solving all issues sensual. There he meets Rumi, where it becomes clear that arousal turns Ryou into an actual monster.

These are the characters available:

Natsumi Rumi - 夏見ルミ

Sugiura Ryou (takes extra effort, you need to specify "short hair", "shirt". See the sample) - 杉浦了

Oyuki - おユキ

Maki - マキ

You can also generate a random monster form of Ryou from the OVA.