DASS-642 I ended up in a love triangle with a big-boobed plain girl who I secretly liked. I lost my senses with these two girls who were polar opposites, and fell in love with them in this innocent double big-boobed harem. - Amatsuki Azu

Dai, a university student, was enjoying a lively drinking party with his best friend Yuto, the sexually uninhibited gal Azu, and the neat and serious Noah. However, as they got drunker, Dai witnessed Yuto having a bold and intimate time with Azu and Noah, and was shocked. Dai, who secretly had feelings for Noah, was tormented by his own immaturity and helplessness and spent a tormented night. Azu sweetly whispered to him, "You're a virgin, right...? Then why don't you try it with me?" Dai was confused but driven by an irresistible desire, and he touched Azu's skin for the first time and became immersed in the pleasure. Eventually, as they continued to have sex, Azu began to develop special feelings for Dai. However, Dai's feelings for Noah were still not wiped away, and his relationship with Yuto became intertwined, and emotions that could not be suppressed by reason swirled between the three of them. --What is the ending that awaits these college students at the end of their youth and desires, their intertwining love and pleasure?