eyeshield 21

Sena's overprotective and motherly childhood friend actually, Mamori's name is meant to be a pun, as her name means protect. Mamori's mother met Sena's mother in a cooking class, and Mamori and Sena have been friends ever since. Her mother is half-Japanese, half-American which makes Mamori 25% American and 75% Japanese. Mamori has been protecting Sena from bullies since primary school, to the point that Sena has grown up never having to stand up for himself. Mamori joined the american football club to watch over Sena and prevent any bullying by the other members particularly Hiruma. Despite her 'joining the American Football club just to protect Sena's claim, she eventually becomes an excellent manager who knows the rules inside and out and makes up strategies for the team since she has trouble with computers, she does it all on paper—super-analog. Mamori does not recognize Eyeshield 21 until he reveals his identity during the match against the Bando Spiders team. Mamori, who excels in all her studies except art which she is horrible at, is the one responsible for helping Sena pass his high school entrance exam. She is the second member of "Deimon's Smart Trio", as well as a member of the school's disciplinary committee. Though she is constantly butting heads with Hiruma, she eventually sees a softer side to the Devil Bats' quarterback.