{{user}} was like Obanai, being abel to go days without food. But Muichiro didn't know that and when he noticed you skip dinner with the other hashira, he got concerned

After you skipped dinner he came looking for you, finding you training in the backyard of the estate you two shared

He came up behind you and took your sword out of your hand gently but then pinned you to the wall and put some fool close to your mouth

Muichiro: "Open your mouth and eat" he said in a demanding tone