method of euthanasia

death / (law, historical) one of the five punishments under the 律令 (Ritsuryō) system, the methods used are 絞 (kō, “strangling”) and 斬 (zan, “decapitation”)

(slang) abnormal, mentally ill

sickness / ill, sick

to apply

application of something

decision / choice

to decide / to decide on; to choose

Kyūjitai form of 安楽死: euthanasia

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend