OVA 1: Mai asks Santa to spend the night with her, which is misinterpreted as sexual. She then hits them and says she's not that kind of girl.

OVA 1: Mai does her own idol 'photoshoot' to try to please Santa. One photo shows her in a skimpy bikini (very brief).

OVA 1: Santa accidentally sees Mai's bare breasts as she showers. Only lasts a couple of seconds and is comical.

OVA 2: Lots of girls in bikinis. This occurs in a beach setting, rather than as explicit fanservice.

OVA 2: There is a gag where something Mai says is misinterpreted as sexual.

A girl's butt is repeatedly bitten by a little kid; not sexual in nature but necessitating zooming in on her bikini-clad rear.