Kenka Banchou Otome: Girl Beats Boys: You’re Me!

Hinako Nakayama (Onigashima) puts her hand on Hikaru Onigashima's elbow while they stare at each other in disbelief

In order to avoid attending a school known for having Japan’s worst delinquents, Hikaru Onigashima switches places with his younger twin sister, Hinako Nakayama. Fortunately, she’s good at hand-to-hand fighting.
From the anime series Kenka Banchou Otome: Girl Beats Boys

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Noragami: No More Gun Violence

A pistol floats in front of Kazuha and a revolver floats in front of Karuha

Kazuha (male) and Karuha (female) are twins who became spirits after dying against their will. When the war god Bishamonten took them under her care, they gained the ability to turn into weapons she could use to fight harmful Phantoms.
From the anime series Noragami

The Loud House: Turn Up the Volume

The Loud siblings (Lori, Leni, Luna, Luan, Lynn, Lincoln, Lucy, Lana, Lola, Lisa, and Lily) gathered on and around a couch watching television

There are eleven children in the Loud household: Lori the eldest is always on her phone; Leni the second eldest is fashionable and ditzy; Luna is a rock musician; Luan is an aspiring comedian; Lynn is an athlete who loves sports; Lincoln the middle child is the only boy; Lucy is a pale-skinned goth; Lana is a tomboy who enjoys building and fixing things; her twin sister, Lola, loves wearing pink dresses; Lisa is a child prodigy, and Lily is a baby.
From the Nickelodeon series The Loud House