青りんご迷宮

Kusunoki Eriko, a high school girl, reunites with Takemoto Takeru at their entrance ceremony, three years after they survived a harrowing night lost in the mountains together. Now with a boyfriend, Tsukasa, and Takeru drawn to the older Natsumi, their rekindled connection sparks a fiery, complicated romance. When Eriko discovers Natsumi is her half-sister, their tangled bonds deepen, weaving a passionate tale of love, secrets, and emotional turmoil, following two souls caught in a labyrinth of fate, longing, and the echoes of a shared past. (Unreviewed summary by Grok 2)