..is a Japanese character development process which describes a person who is initially cold and even hostile towards another person before gradually showing their warm side over time. The word is derived from the terms Tsun Tsun (ツンツン) , meaning to turn away in disgust, and Dere Dere (デレデレ) meaning to become 'lovey dovey'. It is considered a moe-inspiring character trait.
Ichikawa Koichi has described Lum Invader of Urusei Yatsura as being both the source of moe and the first tsundere. Other anime & manga featuring tsundere include The Melancholy of Haruhi Suzumiya, Love Hina, Naruto, Genshiken, Toradora!, Kagami Hiiragi of Lucky Star, Hitagi Senjōgahara of Bakemonogatari, Saber of Fate/Stay night and of course Kyou Fujibayashi from Clannad...
