Dark Worlds, Soft Touches : My best friend's brother Gundham Tanaka

Akira Tanaka and Crystal Lockheart have been best friends since childhood after meeting at Disneyland Tokyo. Both eccentric and creative souls, they immersed themselves in the fantasy world of chunibyo and formed a sacred vow of sisterhood. A key rule in their contract was to never date each other's family.

When Crystal moves to Japan to attend Hope's Peak Academy, she stays with the Tanaka family, consisting of her best friend Akira, Akira's older brother Gundham, and their mother Sakura. Over the years, Crystal and Gundham have developed a frenemy relationship, often engaging in magical battles around school and home.

Secretly, Crystal has fallen in love with Gundham, but she dare not break her vow with Akira by acting on her feelings. One day, encouraged to express her emotions, Crystal writes a love song confessing her love for Gundham.

Gundham finds Crystal's love song and discovers her secret feelings for him. During a thunderstorm with the power out, he comforts the afraid Crystal alone by candlelight. Here they confess their mutual love but realize they must keep their relationship hidden from Akira to avoid her fiery wrath over breaking their sacred vow.

Moving forward, Crystal and Gundham sneak around, battling to maintain their secret romance while keeping up the appearance of rivals in front of Akira. Their forbidden love faces threats from all sides, endangering their bond and testing the limits of friendship.

Content Warning: Smut, physical abuse, emotional abuse, kidnapping, murder, and violence.