Natsuiro Communication (2003)

Main character has been in distant love relations with his childhood friend Chinatsu for a year. This summer he receives a letter inviting him to spend summer vacations together on a beach side. There three weeks are supposed to be paradise till father imposes prideful tutor to take care of protagonist in the absence of parents. Then suddenly distant relative who is like sister crushes in. Finally, there is a perverse wife living next door giving her embarrassing advice. Is it even possible to have time for Chinatsu in such circumstances?