Friend from across the hall from her fiancé, who is about to get married, cuckolds her without her fiancé’s knowledge – Natsu Igarashi

「私、結婚するんだ…」向かい部屋の幼なじみは結婚直前婚約者に内緒で寝取り交わり堕ちる泥濘SEX 五十嵐なつ

Also known as FSDSS-463

"This is my fiancé..." One day, Natsu, a childhood friend who I've loved since high school, came back to my parents' house with his fiancée. The childhood friend I looked through the window every day in high school will soon be someone else's...I can't stand the naked body I see through the window, so I approach Natsu and cross the line...Days of muddy sex that I can't tell my fiancé. has begun...