It's your typical harem setup. One guy meets a bunch of girls , and some how must co exist. THe twist. These girls aren't human. The other twist. They're not the usual inhuman either.
Not cat-girls, hot kitsune, or dragon ladies. Nope He's got a lamia, a harpy and a centaur. I think that alone more or less makes the entire series worth reading. The fact that there are glaring phyisiological differences and just how things work out.
Needless to say, I laughed. SO the manga achieved at least one of it's goals. Worth at least a glance.