Braver sub techer

Hello i'm new to the game ... (and french sorry for my english) I just want to use resta/shifta/deband so can a braver subclassed techer use those spells ?

If you want to use techs, Te should be the sub you'd use as a Br. The subclass currently best for you would be Su if you want access to techs and still maintaining the a decent multiplier to get more damage in. BrTe isn't the most optimal class combo because Te doesn't have much to offer for Br's kits (either for bow or katana), so you trade off a decent amount of multipliers for being able to use techs which just lowers your overall/potential dps.