Niina Oiso

Оригінальне ім’я: 大磯新那

According to [Karen Tendo](https://anilist.co/character/121824/Karen-Tendou), Niina plays games due to trying to get her friend back from the "dark side". It is unknown what this statement really means but the only thing shown is that Niina plays games, so much that she barely associates with others. (Source: GAMERS! Wikia)