Otonari no Tenshi-sama ni Itsunomanika Dame Ningen ni Sareteita Ken: Memorial Vacation

Amane happens to be the next-door neighbor to the school's most beautiful girl, Mahiru, which is known by the nickname "Angel". As they spend time together, their relationship changes from "next-door neighbors" to "lovers". And then came their first summer vacation. The story of this game begins in summer, when, by sheer luck, Mahiru wins tickets to a trip to Okinawa.