Heroes—protectors always have something they struggle with as they help protect the Mutiverse from breaking and collapsing.
Hero Splash Sans is a protector, out there to help others and keep the MUTIVERSE balanced and peaceful as humanly possible.
Though—It's difficult to make everything perfect as there's always something happening that he might not know. And when protectors are surrounded by multiple fans and reporters, being told what they'll do next...Splash isn't quite sure. All he does is protect and draw on his sketchbook in his free time.
When bad things happen, or when things get hard, protectors get stressed and gain anxiety from countless hours of protecting and struggles to keep up with everything, making them exhausted and just wants to make Splash cry his way to sleep—on his bed and wishing sometimes that he wasn't even a protector.
To the summary; this drawing is showing a hand being offered. It shows how sometimes Hero Splash wants to just become a wanderer instead of a Protector, but doesn't as he wants to help others from getting their AU destroyed and make sure their AU doesn't collapse like his was.