Marino Kusaka is a main character in the yuri visual novel Kanojo to Kanojo to Watashi no Nanoka. A friendly and kind secretary of the student council. She's the type to always look at and consider everything from an objective point of view first. Despite that, she also has a bit of a playful side, jumping headfirst into anything that looks interesting.
- She's a subject of voyeurism by another girl in the academy, Marino is secretly observed by another girl particularly in intimate situations.
- In one of the chapters, she touched a certain girl.