|“||He never said that about me before...||”|
Hosoi is a young woman with short, spiky dark hair.
- (Thinking to herself after Ikoma calls Chika cute) "He never said that about me before..." 
- (After her teammates start calling her cute) "Disgusting!! You boys are disgusting!!" 
- (After Minamisawa bails out) "This is why I told you not to rush so far up head alone, you dumbass!" 
- "Maori" (真織?) is composed of 真 (true, reality, Buddhist sect?) and 織 (to weave, to knit, to organise, to unite?), while "Hosoi" (細井?) is composed of 細 (fine, tiny, slender, thin?) and 井 (well?).
- Like the rest of her teammates (with the exception of Minamisawa), she speaks in Kansai dialect.
- She likes inari sushi, dandan noodles, flowers, and cute things.
- Her nickname "Mario" is most likely a reference to the Nintendo character of the same name, as in the Volume 18 extras she is referred to as "Super Maori Bros."
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