look back

後: back, after, remainder / 跡: remains / 痕: trace, tracks; mark, sign; remains, ruins; scar

after this

(Kumamoto) closing the door behind one

cheating at rock paper scissors by waiting for one's opponent before throwing

(chiefly women's speech) first person singular pronoun: I, me

(polite) first-person singular pronoun: I, me

a personal or private matter / (by extension) selfishness

(formal) first-person singular pronoun: I, me

personal, private / secret