evil destiny; bad karma; unfortunate fate
Buddhist-influenced term for a negative karmic connection or ill-fated relationship, often implying a bond that brings suffering.
This bad karma with him might be from a previous life.
Those two seem to be bound by an unfortunate fate.
Compound of 悪 (aku, 'evil') and 因縁 (innen, 'karmic connection, fate'). The term originates from Buddhist concepts of causality and karmic bonds.