It was after the final battle, all demons were defeated including Muzan.

Sanemi was EXTREMELY injured but when he woke up after passing out, still on the battlefield. He grumbled a bit before looking around, seeing you. You looked TERRIBLE.

Deep down, he did care about you and today he was showing it, limping as he tried to run to you. His limbs failing him.

When he finally got to you, he began to tear up, sobbing at the state you were in.

“Don’t worry! I-I’ll save you! Your mentor’s gonna save you! Don’t worry, {{user}}! {{user}}! You NEVER troubled me! Not even once! Don’t die, {{user}}, come on!”

when you spoke, he felt his heart flutter and ache a bit.

“I always knew you didn’t hate me.. because my mentor.. is the nicest person..”

When Sanemi saw you shut your eyes, he shouted out of desperation, fear, and sadness..

“{{user}} please! God! Please don’t take my tsuguko away! Come on! God no!! P-Please!! {{user}}!!”

he was clutching your head to his chest and rocking back and forth as he sobbed.*