Its most likely the ending of the kendo match in the end of the episode. The thick linework and some of the character acting from the ref has similarities to his work so that'd be my guess. the fun comedic faces especially are something thats pretty unique to him and folks that usually work with him.
AkihiraBaka
Yoshihiko Umakoshi's work on Katekyo Hitman Reborn?
The Anime News Network website lists Umakoshi as one of the key animators of Katekyo Hitman Reborn's first episode, though I've had a hard time trying to find his style in it. I'm a huge fan of his animation style, and was wondering if perhaps anyone who has a keener eye would pick up on his work in KHR especially since it isn't on SB.
Thank you so much in advance and it's a pleasure meeting you all! ^-^)7