Tamako is Nekota's younger relative
Tamako has distinct facial features that make her seem intimidating—her long irises and distinctly pointed mouth which gives her a catlike appearance. She has light colored hair with short trimmed bangs.
After Inui says she looks terrifying, she insults him, nobody besides Inui really caring. When Kotarou defends her for her terrifying appearance, she tries to monopolise him and becomes angry at Taka and Kirin for trying to take Kotarou back from her. Nekota realises she has developed a crush on Kotarou, but after explaining that means Tamako loves Kotarou, Kotarou declares Ryuuichi the one he loves most, leading Tamako to insult Ryuuichi as well.