Iizuka Tatsuki♀

Daughter to the corporate president of E-lectra, one of the biggest electronics companies in Japan. She lives in a modest-looking house with a housemaid, separate from her parents due to her father's work. Ever the classy one, she tends to use honorific speech even towards her closest friends and is often annoyed by Torako's mischief. Nonetheless, she has the tendency of ending up being taken along, forcefully or otherwise, with the other main heroines over the resulting shenanigans. Her name contains a kanji of dragon (龍) and the first kanji letter of her name (伊) is pronounced as 'I' (East), thus revealing her name's relationship with Azure Dragon of the East (青龍).

[From Wikipedia]