Koibito Swapping Shinyuu no Koibito o Ore wa Daki, Ore no Koibito wa Shinyuu ni Dakareru The Motion Anime

Kotaro and Rina have been in love with each other for a long time. Their relationship began during their studies. The heroes also got along well with Hajime and his girlfriend Mayu, thus forming a quartet of friends. One day, after a party, our quartet decided to stay at the love hotel. Quite a large amount of booze was drunk and alcohol hit the right places, liberating young people. The heroes decided to exchange their girls for one evening, arranging a real swinger party...