This is Heart and Nato, they are an anatomical figure doll who share the same body. Heart has rays and controls the right face when up. Nato is bald and controls the left face when up.
Different from DCA, they don't switch based on light
When one falls asleep/faint/lose consciousness
the other one wakes up
And when one’s up, the other goes to rest (yes Ik Heart just woke up in the last panel but here he's asleep again I drew them in different days I forgot)
They sleeptalk sometimes
if needed they can communicate in their head, the one on front just to need to wake the other up
OK would keep Heart up for a really long time. one because she wants more time with Heart, two to keep Nato away from plotting murder n' stuff
When Nato’s up he will try to stay away as long as possible too by drinking shit ton of coffee
As motioned previously, their soul gem is stored in their plastic heart, and by putting it in the freezer, it keeps them asleep longer and prevent switching
OK does that when she's doing long repairs on them, or simply because she think they're annoying and doesn't want to deal with them for a while