- Fridge Logic: In episode 9 Saki turns invisible while taking a dip in a hot spring with her friends. She still remains tangible which is confirmed by Yuka using the "hands on" approach to search for her accidentally groping Saki in the process, much to her chagrin. Which is completely unnecessary as a "cavity in the water" caused by presence of Saki's body should give away her position. Except there's no cavity. Huh? How is that possible? Saki is still tangible, remember?
- They Changed It, Now It Sucks!: Several fans were not happy about the OVA's Art Shift, especially about the girls' looks after the Time Skip. Natsumi in partciular looks too boyish.
- Shipping: After that infamous second episode, fans began shipping Natsumi/Saki and Yuka/Rinko. Considering that the anime is centered around these girls, this isn't much of a surprise.
- Viewer Gender Confusion: Koharu. She looked so boyish prior to Episode 9, some fans mistook her for a boy. In that episode, she is slightly more feminine.
YMMV / Natsuiro Kiseki