One Helluva First Time

Kore ga Unmei de Naru Ji no ka (これが運命でなる璽のか)

Toshiaki Saeki's an office worker who's too much of a doormat to say no. Thanks to that, he gets dumped by his girlfriend and spends his days in misery. But, one day, his younger colleague Kawagoe asks him out, and straight-up begs Toshiaki to sleep with him...! Will Kawagoe's first time be Toshiaki's first time bottoming...? Thus begins this innocent office worker romance

Gentsute Kurenakya Wakaranai
(言つてくれなきやわからない)
Wagamama de Usotsuki (わがままで嘘つき, My Selfish Self-Denial)
Out of Focus (アウトオブフオ一カス, Out of Focus)
Lucky Asterisk (ラツキ一アスタリスク, Lucky Asterisk)
Are Kara no Futari (あれからの2人)

(Source: Renta!)