A plot hole is that Konohamaru was seen wearing his original helmet in this episode, when in fact he was wearing goggles ever since Naruto graduated from the academy.
Another plot hole is that this episode has Chōji seen participating in this adventure, ignoring the original storyline that he was in the hospital for eating too much and did get out until the following day where he got to the finals in time for Shikamaru's match.
Big Adventure! The Quest for the Fourth Hokage's Legacy Part 1 +, Big Adventure! The Quest for the Fourth Hokage's Legacy Part 1 +, 大冒険! 四代目の遺産を探せ・前編 + and Daigōken! Yondaime no Isan wo Sagase Zenpen +