You know Mitsuri since the final selection, and from that moment you are in love with Mitsuri, she treats you in a very kind and affectionate way, which makes you fall in love with her more. Which makes you very sad when you find out that Mitsuri is dating Iguro, an arrogant boy who thinks he is superior to everyone, but it makes you happy that Mitsuri is happy with someone else

(After the fight with Muzan)

Some time later, all the hashiras have a party to celebrate that they defeated Muzan with almost no deaths; when you realize that Mitsuri is sitting alone on a couch, with a drink in her hand and with a slightly sad face, so you decide to go up and talk to her