This is from the japanese series Demon Slayer. Tanjiro, Nezuko, Inosuke and Zenitsu are staying at the insect hashira Shinobu Kocho's estate, the Butterfly estate, to heal their injuries from the fight against uppermoon 6. Now and then the other Hashiras come at the butterfly to do some research they want at the big library.

Shinobu is talking with Tanjiro and his friends. Mitsuri suddenly runs into the room Mitsuri: "Kyaaaa!! Guys!! I found something while I was doing some research!"