The Last First Love Begins with a Bet

Summary

I can't be the heroine, and there's no such thing as a prince." It's been a year since Nao and Satomura became a real couple. Feeling as though her best friend had been taken away and left behind, Riko grew tired of dealing with Satomura's friend Sosuke, who frequently showed up at her workplace. Just then, her ex-boyfriendwho was also the source of her past traumasuddenly appeared.