A Story About a Stolen Lover, Cucked Wife and Swapping Sex Ver. 1.1.2 by Suzuya - Adult Sex Game

The protagonist, Johnny and Marie were raised together in a church as if they were in a family.
Now they form an unsteady situation where Johnny has feelings for Marie and Marie for the protagonist.
But one day, when the protagonist meets a female fighter Chloe, he falls in love with her.​