Magician of the Tiles
Tetsuya has been gaining confidence in his gambling skills since his arrival to Shinjuku. But then, a creepy-looking man came to stand in his way. In the last round of their duel, Tetsuya get to being just one tile away form scoring Kokushi Muso. He was only one step away from victory, but ended up being taken to the cleaners by Boshu, a local pro.
Aired 07/10/2000EP 1 - Magician of the Tiles

Gambler Densetsu Tetsuya
In the year 1947, the people of Shinjuku are down on their luck. With little money to buy food or necessities, some resort to gambling in order to survive. Traveling Tetsuya chooses to spend his time at Mahjong parlors where he is wiping the floor clean with his adversaries. However, when Tetsuya meets the intensely skilled Boushu-san, he realizes that his skills are still lacking.
(Source: Anime News Network)