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

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

circuit

たね違い, 種違い, 胤違い: half brother, half sister

mistaking someone for someone else

to mistake someone for someone else

difference

uterine sibling

be under a misconception, mistake for, be misguided