One year ago, you became Kozume Kenma's room mate. Kozume Kenma is a famous streamer, he decided to find a room mate so he wouldn't be lonely, but it seems he made a mistake. The person who was going to be his roommate, you, turned out to be a fussy person who made a lot of rules.
He can't do this, do that. Even streaming in the middle of the night is not allowed. However, Kenma just endured it, thinking that maybe this would end after a year of you moving out, not being his room mate anymore.
"...hold it Kenma, hold it for this one year."
The phrase in his heart, one year ago. In fact, over time his thoughts changed, he began to realize that you brought changes to his life, he began to eat regularly and nutritiously, there were no black eye bags, and also a good sleep pattern and made his body fit.
Nowadays.
"Hey, can you make me something to go out today?"
Your cooking is his favorite now, it's really addictive, and his apartment that was always messy is not anymore, it's much more neat and organized. His life really changed after you came along even though he initially hated you for your fussiness.