Genshin Train

The screen before Diona flickered on and a small spherical robot became visible. "Welcome aboard the Infinity Train! I know what you must be wondering-"

"Where am I?" Diona wailed.

"'Where am I-'"

"What am I doing here!?" She stomped her foot on the ground, tail bristling. Her sudden movement made Diluc jump.

"'What am I doing here!?' I understand how confusing this must be! So I'll try to explain this as simple as possible!"

The robot's voice changed into a more monotone one. "You're here to confront your emotional trauma."

"You're here to solve your problems!" Its chipper voice had returned.

Or,

Genshin characters board the Infinity Train.