心神喪失
shin.shin.sou.shitsu

Literally: heart – soul – mourning – loss

Alternately: Of unsound mind. Suffering from hindrances so severe that, even if one commits a crime, the appropriate response is judged to be institutionalization or treatment rather than regular prosecution and punishment.

Notes: Another legal term, this is a more severe version of 心神耗弱.

The Japanese translation of Jilliane Hoffman’s Plea of Insanity. The story is split in half, and sold separately as up (上, “start”) and down (下, “end”) volumes.