We watched this super cool edit of the Isogai family at their daily practice session. It's really impressive! This could be the most talented flatland family on the planet! If we understand the description right this is Takumi Isogai (who successfully competed at the KOG already) and his sister at their daily practice session. In the description it says "Takuya Isogai" but that's probably a typo.
However, when checking for Takumi's correct name we came across the edit above which is only 2 months old and didn't get much attention as it seems. Check it out!