The former girl manager of the baseball club whom I always liked is a super bitch who had sex with everyone except me

敗北の乱交同窓会 ずっと好きだった野球部の元女子マネは僕以外とヤリまくっていた超ビッチ。天使もえ

Also known as FSDSS-451

The protagonist meets again with Amatsuka Moe, an old crush, after 10 years of not seeing each other. This time, he gathered some courage and was going to confess his feelings. But instead, his old teammates round her up, for a round of gangbang that she takes cheerfully.