Kaijuu Shoujo Anosillus (2-daime)

Kaijuu Shoujo Anosillus (2-daime)

怪獣少女アノシラス(2代目)
A mysterious girl who is the successor of Anosillus, whose capable of growing to the size of monsters despite her appearance.

She reveals to Yuuta that the world he inhabited is an illusion with Akane as its goddess.
(Source: Wikipedia)