• Book Name: Dondon Kawatteiku Giri no Ani to Imouto Manga
• Alternative(s): Steadily Changing Stepbrother and Stepsister
• Genre(s): Romance Comedy Sports Office Workers Doujinshi Web Comic Slice Of Life Full Color
• Author(s): Tatsubon
• Year 2023
• Status: Ongoing Download Manga
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Summary: A younger sister looks down on her brother who got fat. However, her brother suddenly started dieting, and she\'s bewildered at the sight of him who has changed! A heart-pounding, warm and fluffy comedy of stepsiblings on a diet! (Source: Amazon)