Keiko’s Guardian Dungeon Fairy, Kazuko
Kazuko acts very innocent but can be very insane. She tends to go insane when annoyed or misunderstood. The misunderstandings cause her to have these chains around her.
The main characters of Lucky Star as they appear in the anime adaptation — (from left to right) Tsukasa Hiiragi, Konata Izumi, Kagami Hiiragi, and Miyuki Takara.