Up until now, we basically see the same sort of story in eroge - boy meets several girls and either tries to be *very* good friends with them or *make* them be good friends.
Mainichi ga M is the first type of game where I see the tables turned - the player is *made* to be good friends and has his dolphin 'teased.'
The CG page (NSFW) shows the hero having his dolphin stepped on, shaved and tortured while the System page (VNSFW) shows some sample animation from the game. Do you prefer to do the teasing or be teased?
The maker of the game is Kaguya who do the games by most talented artist Choco Chip.