Deviluke, Nana Astar

ナナ・アスタ・デビルーク

One of Lala's younger sisters, she is also Momo's elder twin. Nana merely appears to be the more mischievous of the pair. She has an affinity for fauna. Both Nana and Momo are currently on Earth, fleeing their studies. She did not like Rito at first, but later warms up to him. She displays tsundere traits.
Nana also possesses a special ability to communicate with various alien beasts and animals. She additionally uses an invention of Lala's that allows her to store her friends in a virtual space and summon them at will.
Nana has stated that she is the inferior twin, being flat. People claim she is the worse-behaved of the two, although Nana argues this is because most are unaware of Momo's dark side. Despite this, even after they argue, they reconcile. Nana supports Lala's relationship with Rito, even though she frequently calls him a beast; this ultimately aids Momo's harem plan.