Why do I feel like that's a lie?
"Partly," Tumbler responded to Cuphead. "They want to take care of an injury that they didn't want you to see."
You know this how?
"Unlike you, I don't sleep. I have no need for it. Because of that, I see things that happen when you do sleep and even when you're awake. Things you don't notice because they don't want you to."
How come ya never brought this up until now?
"I have. You've just ignored me like you always do."
Cuphead gave a small hum as he hopped up and made his way towards the bathroom. He saw that the door wasn't even shut very good, a clear sign that Chara had made a mad dash inside to take care of themselves as best as they would allow. The cup pushed the door open fully and came inside.