For my son who aims to enter a national university, I decided to ask Shirone to be a private tutor. Shirone is pretty, kind, and her studies are easy to understand, so my motivated son's grades improved rapidly. Shirone was scheduled to come on the day when a large typhoon was approaching. However, the Shinkansen was suspended... my son couldn't return from his school trip, and I thought Shirone wouldn't come either. Just then... Shirone arrived soaking wet in the torrential rain that it was impossible to walk...