Tsundere ツンデレ

Thanks to KDrama, NJ Kpopper just learned about "Tsundere" for the first time.

According to this process, a person can gradually transform from

цунцун to дэрэдэрэ. Certainly we all hope that when transformations occur, they will be in a good direction, and not painful.  But no one can certify that for us.