I know a lot of folks are gunna draw parallels between this and Love Hina. Here's the deal though: 1: This focuses on temple rites and rituals. Seems as though research has been done, so I'm learning as well as laughing. 2: Akemitsu has more of a personality than the Harem MC in Love Hina. Dude in that was just remarkably sturdy, which a lot of MC's usually are. Sadly, that's one of their few personality traits. The story is a lot more straightforward in her than GBD. You have stakes and parameters to be met. Means that the jokes are a lot less, humorous this timearound. Less circumstantial ecchi comedy and more focus on keeping Akemitsu's worldly desires in check.

I'd read Grand Blue Dreaming first, to get a feel for the author, then come back to this, so you can appreciate it more.