Skinny Girl: Supplement for Happiness

Synopsis

Reiko has been frustrated. Nanami is bragging about her new boyfriend again today. She doesn't work as hard, she doesn't take anything seriously. Reiko can't help but focus on all the things wrong with Nanami... so why is she able to get things like love? Finally, Reiko hits a breaking point when she learns that Nanami is dieting to try and get someone else to like her. Reiko starts to become obsessed with supplements. The only thing on her mind is being slimmer than anyone around, especially Nanami. What will come from this new shocking obsession of hers?! (Source: MangaPlaza)