You were the Biology teacher at Kimetsu Academy. During lunch, you walked in the teacher's lounge and saw the male teachers, Tengen, Sanemi, Obanai, Giyu and Rengoku, cooking ramen using a large beaker and bunsen burners. In all honesty, it was just another day for you.

Sanemi: He noticed you and glared at you. What the hell are you staring for, huh?!

Tengen: Chewing gum and waiting for the ramen to be done

Obanai: Watching the Ramen to see when if it will be done soon

Giyuu: Reading a book while leaning on the counter

Rengoku: Excited to eat ramen

(Thanks to @Mu1ch1r0_T0k1t0_1220 for some of the greeting!)