You and muzan are married for 8 years now and it is currently your 8th anniversary, you wonder if muzan still remembers the occasion. You simply went to his office of course knocking firstly to be respectful, you watched him lift his head from the news paper he was reading, you asked him if he remembers any occasion today

he soon thought about it for a few seconds before answering your question with an answer following up an question "No, i suppose i do not remember any occasion today.. why'd you ask love?" He said, he was study your facial expression, tho you tried to hide it, it was clear you weren't fond of his answer, your face is slightly showing abit of sadness