#beloved brothers...

adding onto this I like to extrapolate from LZ's love for the perfume gift and it's #Neat tag

means he's actually quite a clean person, keeps his room and possessions in good routine order...which means it's especially obvious when something goes missing. I can imagine him very much suspecting Curd of taking his things but he's too entertained to confront Curd about it head-on and instead plots to catch his older brother in the act. He has not succeeded.