きょうはくかんねん
obsession; compulsive idea
Noun
下手へたに手てを動うごかすと気付きづかれてしまうという強迫観念きょうはくかんねんが俺おれを襲おそう。
I was assailed by the stupid, but unshakeable, idea that if I was imprudent enough to move my hand I'd be noticed.