Promotional video for the special one-shot "Eyeshield 21: Brain x Brave" that commemorates the 21st anniversary of "Eyeshield 21".

ZAIYUKI centers around a kappa boy who is thrust into an adventure of growing up after a treasure hunter comes along, based on the ever-inspiring "Journey to the West" story. 
(Source: Crunchyroll, edited)

Posted on Yuusuke Murata's twitter, the anime short follows Saitama after he discovers a 1-yen (about US$0.01) sale for high-grade hot-pot meat — but the sale ends at 5:00 p.m. that day.
 
(Source: Anime News Network, edited)

Village Studio