Gaika Nagareboshi

Giselle Nagareboshi (ジセル・ナガレボシ Jiseru Nagreboshi) is a wandering immortal; a travelling mage believed to be within the same age range as Zeref. She is a known companion of Ahatake Kurosaki, the two have been frequently seen in the company of the other over the course of the last few centuries, and as such is considered his closest friend, a feeling that is mutual.

Giselle is the current incarnation of Firala Baris, the Shining Phoenix (光照の鳳凰 Kōshō no Hōō), a creature that has warred with Delphinus, the Eight Headed Fire Dragon (八頭部の火竜 Hachibu no Hiryū). As such, this makes her the natural enemy of Ryūka Injiki, the dragon's current incarnation, and the two have been at odds over the course of the centuries.