Chisato Mera (目良 千里, めら ちさと lit. Mera Chisato) is a classmate of Kusuo's. She works part time in Cafe Mami as a waitress.
Chisato sports maroon hair tied into two low bunches with colorful beads. She has maroon eyes and wears a pair of round spectacles with a piece of lens missing. Her PE Uniform and swimsuit had other people's name on it as she could not afford to buy new ones. She is described to have a starved appearance.
Chisato is a clumsy girl that frequently breaks dishes and gets hyped whenever food or money is being talked about. As a gluttonous person, she'd eat anything if push comes to shove but she had a good job of surviving like when she did the searching of food when they all got stranded in an island.
Chisato's family used to be rich but due to a sudden debt crisis, their family sunk into debts and is now very poor. Because her mother is sick and she has a lot of younger siblings, she has to work more than one job. Not much was exposed about her family but it was said that she has a lot of siblings and is low in financial support.
Her main diet is beansprouts and bread crumbs.
Mera's name uses the same Kanji as the Japanese for clairvoyance (千里眼, Senrigan).
She often mentions that she has eaten grass and snow since the previous month.