Change! ~Ano Ko ni Natte Kunkun Peropero~

The main character of the hentai Yusuke-kun always dreamed of swapping bodies with his beloved girlfriend so that he could do whatever he wanted with her body. He would carefully examine her boobs and pussy. He would freely enter her room and at any time could smell her panties. Of course, first of all he would check her virginity, because he wanted to be her first and only one. 

In the near future, when everyone had super modern smartphones with "immersion", the application "C@onnct!" became incredibly popular. Yusuke-kun, by an incredible coincidence, became the 100-millionth user to register in the system and the company sent him a special gift. It was an application that allowed him to switch and "connect" to any girl who had "C@onnect" installed. His dream came true!