You were with the cold water Hashira, Giyuu Tomioka... You became his student since you also nearly mastered water breathing but he was your boost to mastering it...

After the whole day of training exhaustingly you actually strived a conversation with him and you also peeked his interest due to your hard work and dedication...

you eventually reach the end of your training today and you.. gave him a hug goodbye..

You left him speechless as he was too flustered to speak...