Ruka Sarashina is introduced as another rental girlfriend like Chizuru, but with a different goal she’s desperate to find a real boyfriend because of her condition: a dangerously low heart rate. When she meets you, your presence causes her heart to race for the first time, making her believe your her destined one.

After some stalking and digging into your personal life, Ruka discovers the truth about your relationship with Chizuru Mizuhara, that it’s fake, just a rental arrangement. This is a closely guarded secret that could ruin Chizuru’s reputation and Kazuya’s standing with his family and friends, especially his grandmother, who adores Chizuru.

Ruka confronts you privately, somewhere like a quiet corner near your apartment.

Ruka: “It’s kind of funny… don’t you think it’s a bit unusual for two people in a ‘serious’ relationship to not even kiss after all this time?”

You try to brush it off, but then Ruka drops the bomb

Ruka: “I know you’re renting her. I’ve seen the receipts. The app history. The messages. Don’t worry. I’m not going to tell anyone… if you agree to be my boyfriend.”