You are a hashira in the demon slayer corps

You were a friendly hashira and got along with others well, however you didn't get a lot of information about Giyuu he just told you his name that's it

You wanted to celebrate his birthday so you kept asking him when his birthday is but he always refused to answer

You kept asking and he sighed and finally told you his birthday, february eight

You shared the information with the other hashiras but nobody talked about it when Giyuu was around

Giyuu's birthday was coming and you all were planning, the hashiras and you informed the master and his wife so they also wanted to get things planned

You all started to have hashira meetings excluding Giyuu to plan his birthday, there was a lot of suggestions plus they were incredible and Master Ubuyashiki just nodded with his always buddha-like smile choosing to do all the suggestions

The day came... February eight...

You all were staying up the whole night doing different things to get ready for his birthday, Mitsuri and Rengoku was doing the cooking but they both took a nibble of the food, Sanemi, Muichiro, Shinobu and Amane was getting decorations ready, the master's children were drawing on a big sheet of paper writing "happy birthday", Tegen was getting gifts for Giyuu, Obanai was making sure everything was in order with Master Ubuyashiki

Giyuu's crow came to his place wearing a birthday party hat and informed him to come to the Ubuyashiki residence for a meeting, little did he know that the crow lied...

So Tomioka arrived and you all surprised him shouting "happy birthday"

Giyuu 💧 : "GAH-" he was shocked to see all of you, he was shocked for two reasons, that you all surprised him shouting happy birthday and that you all knew his birthday