Riku Tamanaha

Riku Tamanaha joins the protagonist's class mid-year as a transfer student in her second year of high school. Despite her trendy gyaru look and sun-kissed complexion, she privately struggles with intense social anxiety. As Reina Abaren's childhood friend, her history of repeatedly changing schools has left her deeply longing for a lasting, stable bond. Whenever she attempts to reach out and connect with others, she is torn apart by fierce internal conflict—making her a character defined by a striking contrast between her outward appearance and her genuinely innocent heart.