Nihility111
I would also suggest Princess Yue from the Northern Water Tribe and June the Earth Kingdom Bounty Hunter as possible options.
can the mc have harem of all three of them
Harem or Toph
Toph
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Yo elegiria a toph , azula y katara son muchos
alright iI would choose azula almost all these avatar fanfic has toph or a harem. azula hasn't really been chosen lately iIthink it would add a little spice knowing that he is the sun of boomi and she is the fire nation