Time Bokan Series: Itadakiman  

タイムボカンシリーズ イタダキマン, タイムボカンシリーズ　イタダキマン

The tale begins in 20XX and takes place at Oshaka School in Kamakuland, a renowned institution that only admits descendants of Priest Sanzos clan. Despite their repeated failures, the villain trio persists in their efforts to enter the school. One day, three gifted children are summoned by Shakyamuni residing within his body and tasked with locating missing puzzle copperplates scattered worldwide and completing the puzzle board to enhance Oshaka School's esteem. However, their conversation is overheard by the villain trio, who devise a plan to thwart those selected youngsters. They subsequently encounter a brilliant boy named Koochan, whom they believe will aid them in acquiring the copperplates and winning over the goblin to join their cause. Simultaneously, they attempt to attack Oshaka School's heroes with the goblin's assistance. Recognizing the nefarious scheme, Koochan transforms into Itadakiman and valiantly battles against the wicked trio to drive them away from the school.