FSDSS-463 "I'm Getting Married..." My playhood Friend In The Opposite Room Is Secretly Sleeping With Her Fiance Just Before Marriage And Falls Into Mu

"This person is my fiancée..." Natsu, a childhood friend I've liked since high school, came back to my parents' house with my fiancée one day. The Childhood Friend Who Peeked Through The Window Every Day During High School Is Soon To Be Someone's... I Can't Stand The Naked Body I See Through The Window, So I Approach Natsu And Cross The Line... Days Of Quagmire Sex That Can't Be Said To My Fiancé has begun...