Birthday: August 8
Height: 151 cm
Weight: 45 kg
Lala's younger sister and Nana's twin; they are introduced when they have most of the characters in a virtual game world created by Lala that they subsequently modify. They claim they did this to determine the nature of their sister's friends and to test Rito's affection for Lala.
Momo has short hair and is generally sweeter than her twin, but develops a bad attitude whenever Nana takes credit for what she does; she shares a connection to plant life. She also has a strong attraction towards Rito (similar to Lala's), stating how his facial expressions are lovely and even letting him touch her tail. At times, she would even sneak into Rito's bed at night and stating how jealous she was of Lala that Rito's hand was stuck to her tail. Momo and her twin are currently on Earth, running away from their studies.
Momo has a special ability which allows her to communicate with various alien plants, which she summons through her phone made by Lala for her and her sister.