Mk56 is a common name for a Tsundere. Those nicknamed or named Mk56 are apart of the Mk series. They tend to differ between each model number however, 56 has survived the longest so far.
by Zeebot24 January 23, 2021
A tsundere is someone, who switches from being tough and cold towards a love interest into being soft and sweet.
by Zeebot24 January 22, 2021