Fuwakuro

Sanoba witch really was something indeed. I don't think I ever quite found something that hit the same spot, though it's really hit or miss on whether you like the main heroine. Seems like you know well of Yuzusoft developer; I would recommend checking out SMEE which also have mostly comedy+romance games (though, unlike yuzusoft, generally without any surnatural element). My favorite from them was sugar style but like all comedy/romance stuff it's hit or miss. You mentioned Rewrite, which is from key developer. Their game usually have a first half that is focused on romance/comedy and a second half that has deeper story (well, not that simple, but it's the basic idea from the ones I played). Grisaia also has a lot of comedy for the common route.