Monsters stuck in your head (Soukoku) (DazaixChuuya)

Chuuya Nakahara is so done. After two years of being kidnapped, used, and tortured with an ability (making him totally numb, loyal and hiding every glint of his apperance and personality) and hurt without anybody finding him, he returns accidentally to the Port Mafia. Only that the ability of his kidnapper still affects him and nobody can reconize him. Still it is Chuuya so he tries to protect Dazai anyway, even though nothing will be like before again.

How long will he endure this until he finally breaks.

Or Chuuya gets tortured emotionally and Dazai is the only one able to fix his former partner.

heavy Trigger warning!!!!!!!!