Happy Go Lucky

Takashi and four of his classmates fourthgrade students cannot succeed in doing a back pullover around a horizontal bar Their gym teacher warns them they have one week to succeed if they resign now then tomorrow facing life difficulties they will always run away and become bums Furthermore all five must succeed if one of them cannot do it then all of them fail Takashi is really worried and wonders if he wont be always the loser who couldnt succeed in the back pullover bar exercise