PLO5 HU AJT52 top and btm pair

.5/1$ @ GG
I open 6max table, villian sits down with 100BB. He seems to be at no other table, and I dont know him, but I dont play a lot.

Hero raises AKT5s2s, Villian 3bets 9BB

Flop T53r 18BB
Villian bets 9BB, Hero calls

Turn 9dd
Villian pots, Hero folds?

EDIT: it actually was AKT3s2s. Comments on preflop appreciated as well, it might be a fold to a standard 3bet range?!

Might be easy for more experienced PLO5 players, to me not clear (and I have no tools)