My Name Is an Muge, Also Called Manman.

Due to her obesity, the heroine repeatedly confessed to the person she liked and was rejected. She originally wanted to regain her life through a major transformation. Unexpectedly, what has been bothering her is not the obesity and external pressure, but the inferiority complex and cowardice in her heart. See how she slowly becomes the person who dares to speak and act, and see how the male protagonist helps her be her true self, An Muge!