One♥Pound Gospel(1987)

1-Pound no Fukuin

Times are tough at Mukaida's Gym. Though a promising novice with a surprise win in his debut bout, Kosaku has since adopted a steady regimen of extremely unhealthy eating habits--enough to make his coach ready to permanently throw in the towel. Sister Angela hopes her teachings will help Kosaku see the error of his misguided ways. But will Kosaku's burgeoning feelings for the young nun undermine his ability to concentrate on training, fighting and binge eating?

(Source: VIZ Media)