Ruka Sarashina

Ruka Sarashina is a college student and one of the central romantic rivals in Rent-A-Girlfriend. She begins as a rental girlfriend but pursues a trial relationship with Kazuya after believing he makes her heart beat normally.

Ruka Sarashina's role and relationships in Rent-A-Girlfriend

Ruka is energetic, direct, possessive, impatient, and sincere about wanting an exclusive relationship. She has no special power; her defining drive comes from a heart condition, emotional intensity, and willingness to act openly.

Ruka Sarashina's abilities and key relationships

Kazuya's attachment to Chizuru creates ongoing conflict, while Ruka repeatedly challenges the dishonesty surrounding their arrangement. Her arc questions whether strong feeling alone can justify pressure on someone who cannot return it.