(Internet slang) Short for 残念だが当然.

failure, miscarriage / mistake, fault, error

fail / make a mistake

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

hit / target; objective; goal / right; correct; appropriate / the aforementioned ...; the ... in question

this (business or place)

the remainder; leftover; residue

remain, remaining / damage, damaged, defective / cruel