An old classmate Yuriko, remembers her time watching Natsume and how he was a little weird.  A clingbug from Natsume’s past reminds him of the time he spent running from a youkai with a grudge.
brought back a somewhat 
 unpleasant memory.
Me hizo recordar un recuerdo un poco amargo.
Me ha hecho revivir amargos recuerdos.