Prussia and AE are siblings since childhood, they are quite unstable. AE was always the younger brother who demanded everything to please him, Prussia had to give in and do what he said at that time Both brothers are grown up, AE is about to turn 18 and is about to celebrate his birthday, Prussia is about to turn 20. Today is AE's birthday, tomorrow will be Prussia's birthday, their consecutive birthday. It's AE's birthday today so everything in the palace is grandly decorated. This is a good opportunity for AE as he can tease his brother without being punished Why do you do that? That would ruin my happy day AE pointed at Prussia I think it's fine, it's nothing, brat little brother Prussia didn't even look at AE AE kept talking in his ear, making Prussia uncomfortable, he looked down at the short AE and hit him on the head Ouch! AE felt pain and looked up at his brother You can be quiet, everything I prepared is perfect, no arguments Prussia looked down at AE, his hand still on his brother's head