Nana Astar Deviluke  

, ナナ・アスタ・デビルーク

Nana is one of Lala's younger sisters and also an elder twin sister to Momo. She has mischievous tendencies and enjoys spending time with animals. While initially disliking Rito, she eventually warms up to him. Nana possesses tsundere traits and can communicate with various alien beasts and animals through a device created by Lala. Additionally, Nana has the ability to store her friends in a virtual space and summon them at will. Despite being known as the worse behaved of the two, Nana claims that it is due to most people not knowing about Momo's dark side. Even after arguing, they reconcile. Nana supports Lala's relationship with Rito, despite calling him a "beast" many times, which ultimately helps further Momo's harem plan.