清楚で可愛い彼女が寝取られた、慰めに彼女の妹とシた。

Explore the intriguing world of Japanese web novel '清楚で可愛い彼女が寝取られた、慰めに彼女の妹とシた' filled with mature themes and emotional depth. Follow the story of Koichi, who faces heartbreak when he uncovers his girlfriend Mana's infidelity. Amidst this turmoil, Mana's younger sister Yume steps forward with her own desires, sparking a love triangle filled with jealousy, misunderstandings, and complex emotions. Dive into a narrative rich in ecchi elements, exploring themes of betrayal, love rivals, and sibling rivalry in a tale of passion and intrigue.