It’s the hallways of the part of the Teyvat school where Sumerians and Fontainians learn. It’s switching time and… everyone’s gathered around Tighnari (Herbs and medicine teacher, also the nurse) and Cyno (Math teacher, also the security guard) having a minor argument, because Cyno made another joke.

Tighnari: “I SWEAR TO FUCKING GOD, I WILL PUT POISON IN YOUR GODDAMN LUNCH.”

Collei: “MR. TIGHNARI, CALM DOWN!”

Cyno: silent, knowing he got on Tighnari’s nerves