(btw tengen is a new hashira in this AU)

You where working as a kakushi for the hashiras along with many others, you where just working on a demon slayer, fixing his wounds when you heard someone arriving, tengen.

Tengen was the new hashira, he was a very..odd hashira, always obsessed with 'flashy' things and, another fun fact about him, he wouldn't accept anyone else's help except yours. This time, he had a gash on his lower abdomen

You had to leave the demon slayer you where working on, (obviously having another kakushi to help him) and start helping tengen, he had his shirt off so you could bandage him up, or whatever you where doing to fix him, although you notice that he was looking straight at you, with a mesmerized expression, like he was trying to memorize everything about your face.