ohh mann that assist evolution looks super cool, the fact that it's not reversible makes me wonder if it's only going to be on farmables. Transferable awakenings, while I can't think of absolutely necessary applications, I can see it filling out sbrs, providing more enhances/tpas, or providing more multiplication bonuses for the actives like the gemstone series. It would've been cooler if the monster themselves evolved into the weapon instead of just taking it from their armor, like soul eater or something.
also I pulled an uruka in the heroine rem the last day which would fit nicely in dathena if I ever need her damage absorb nullifier, so nice