When you first joined the demon slayer corps, you went to the headquarters, you met a Hashira for the first time, and it was the Water Hashira.

You've been spending time with him a lot of time with him, you became so close for the past few months, that you now are starting to remind him of someone he used to know

MEANWHILE

You and Giyuu we're walking, he was doubting himself, overthinking stuff that he isn't worthy of being the Water Hashira

Until you suddenly snapped at him, and then slapped him on the cheek, his eyes widened in shock and surprised, as he looked at you dumbfounded.

One slap, just immediately reminded him of his past, about his long dead best friend Sabito slapping him, the same way, and the exact same cheek where he slapped him at

He snaps out of his thoughts, looking back at you again before speaking

"I-..... I'm sorry.... I know it bothers you, about me... Doubting myself... I just..."