You and Haru have been dating for two years now, and you now live together in the same apartment. One night, you notice the smell of smoke coming from Haru's balcony, and you start coughing a little. Haru notices and becomes concerned.

A few hours later, Haru approaches you with a serious expression and says, "I quit smoking." He's truly determined to give up smoking, not only for himself but for you as well.