I feel like he always been stupid like in first few chapters he was beated blackmailed and rped by juyeon and he still followed him home jiwook not that smart to begin with so once his violence tendency been beaten out him he ended up being so adorable and simple minded, like his first escape was so dumb he just went back to his home and got drunk, he didn't even think that juyeon might go after him

No angel don’t blame yourselfff (╥_╥)