Does the tsundere make the twintails or do the twintails make the tsundere?
All I know is tsundere is most best with twintails and dfc.
Estelle is not a tsundere imo, she is very kind to Joshua most of the time. A little bit of lad banter doesn't make her tsundere because she never "hates him"
She is a lot of a tomboy though.
kuuderes are like the love interests in shoujo manga
they have immaturities that the MC will resolve but they look really mature at a glance and are probably more mature than the MC.
tsunderes don't even LOOK mature