Tensei Saki ga Zannen Ouji Datta Ken: Ima wa Fukkin 1-kai mo Dekinai kedo Yasete Isekai Sukuimasu
Alternative title: That Time I Got Reincarnated as a Disappointing Prince: Right Now I Can't Even Do One Sit-up, but I'll Try to Lose Weight and Save the World, 転生先が残念王子だった件 ～今は腹筋１回もできないけど痩せて異世界救います～, Tensei Saki ga Zannen Ouji Datta Ken
Story Overview
After being asked by the goddess to defeat the evil god, a young man who gets into a plane crash while returning from a business trip overseas is reincarnated in another world. However, due to his corpulent and unattractive appearance, he was reincarnated as a stupid prince who is referred to as the "Pig Prince" by the aristocracy. How are you going to defeat the evil god if you can't even do one sit-up? The struggle of the Pig Prince to lose weight is told here!