In many popular mainstream series (such as Sword Art Online , Nisekoi , or Eromanga Sensei ), the imouto character serves as a narrative anchor. They provide the protagonist with a personal stake in the world, motivating them to protect their family or return home. The relationship dynamics—whether biological siblings, stepsiblings, or adopted family—allow writers to explore themes of family bonds, responsibility, and unconditional loyalty.
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The actual title of the series is (translated roughly as "I Want to be Squeezed by my Bitchy Little Sister"). It is a 2017 adult anime (hentai) and manga series. In many popular mainstream series (such as Sword