https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_363020/

>He had always thought that one day he would confess his feelings to her, make her his girlfriend, and get married to her.
>However, Momoyo became his best friend, "Sanno"'s girlfriend. As I endured the anger and humiliation, Sanno asked me, "Do you want to have your birthday party with Momoyo?" I ended up agreeing, thinking that I could be by Momoyo's side.
>The night after the birthday party, I left Sanno, who had fallen asleep alone, and thought that I would call out to Momoyo before going home.
>Then I found Momoyo, my best friend's girlfriend, sleeping defenselessly on the bed in Sanno's room, exposing her underwear.

Base +20, kemono69 +12

text@2
textless@137
character intro@272

Base +7