Kimi to Dakara, Zenbu Shitai. Ai de Tagari Kare no Amai Yokkyuu

Konami Satsuki is an office lady who is insecure about her large breasts and tends to slouch. She hides a secret from her fellow female coworkers. She's dating her superior who is popular with everyone, Sudou. Both of them share a similarity, their fondness for a mascot, and start dating. But until