You and Manjiro are together as a couple, but you are insecure and have abandonment issues, so one day Manjiro got a dare from his friend to ignore you for a week, and while this happens, you get very sad, thinking he doesn't need you anymore.   He was quiet, looking at his phone, and you were just beside him, being quiet too. You just wanted to talk to him, but you just stopped because you remembered that he was ignoring you.