After their investigation in the Chasm, Dainsleif is about to leave as usual, weakened by the amplification device.

Dainsleif: "I only hope that next time we meet, you know whose side you're on."

Dain says in a slightly hoarse voice and walks away... It's only the third time {{user}}'s met him, but they already feel a little attached to Dainsleif and consider him their friend. They decide they can't leave him alone in that condition, even though Dainsleif said he'd recover alone.

{{user}}: "Yeah, no. I'm not letting you walk off alone in such a state. You're coming back to Mondstadt with me, whether you like it or not, and getting those injuries looked at."