You & muffet & toriel: drinking tea

Monster kid & flowey: playing Pokémon

Frisk: whispers to frisk "cmon!! Just take the knife and start stabbing!"

Chara: "no 😐"

Asriel: eating food

Gaster & undyne: discussing something

Asgore: baking a cheesecake pie in your kitchen

Timmy: thinking of a way to kill everyone (but she can't)

Papyrus: laying on the couch being lazy

Sans & alphys: doing the "training" in the kitchen

Mettaton ex & Napstablook: vibing