Chara grabs at Frisk's arm out of pure instinct as they pass, misses, and falls forward, landing chin first on the floor behind them.

They lie there, dazed for a moment, before sitting up. Their mouth tastes of blood - they've bitten their tongue. They shake their head, a hand going to it, and then look up to see a similarly sprawled Frisk.

They get to their feet and move slowly and carefully towards them, cheeks heating and head ducked.

"I am very sorry, Frisk. Are you alright?" They dither about it, and then jerkily extend a stiff, rigid arm to them.