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|Romanized Name||Hasegawa Matsuri|
|English Name||Matsuri Hasegawa|
Matsuri Hasegawa (長谷川まつり) is Yū's new roommate after she and Akari had to move from their old rooms due to severe water damage.
Matsuri is a lightly tanned girl with ruby-colored eyes. Her sandy-blonde hair is long and appears to be somewhat wavy, with loose bangs slightly framing her face. She wears a light green headband with a gold heart clipped to the side.
Matsuri appears to be somewhat quiet and curious, but kind and helpful.
- Based on her appearance, it's possible that Matsuri is a pop-type idol.
- She shares her voice actress with Nina Dōjima.