Kousaka, a young man with sharp black hair and glasses, dons a yellow vest, black sleeve garters, and a matching bowtie. His calculated exterior masks inner chaos after Naoko-san—his former fiancée who wed another—spurns him. Determined to flee heartbreak through London studies, he instead drowns his anguish in alcohol during a raucous evening.
At a lively gathering, he debates love’s impracticality, advocating marriage devoid of passion to avoid irrationality. Yet his own unresolved longing for Naoko exposes the hypocrisy of his claims. Overindulgence leads him to vomit on Toudou-san’s prized erotic art, inflaming debts and sparking the protagonist’s pivotal drinking duel with Rihaku.
Midway through the night, he joins the Rhetoric Club’s “Sophist Dance,” briefly energizing elderly guests and numbing his despair. Later, he confronts Naoko with practiced eloquence, pleading for reconciliation. Her unwavering refusal shatters his efforts. Through these encounters, his choices weave secondary figures into the narrative’s absurdist tapestry, propelling both alliances and conflicts toward surreal climaxes.