If you're looking for manga similar to Doubutsu Sumo Taikai, you might like these titles.
Rumor has it that whoever spends a night with this sumo wrestler becomes beautiful...and so, another lone woman appears at his door!
A boy in love with his classmate has been pushed by their own free parental pressure for the world of sumo.
Koitaro Samejima is a professional rikishi who, despite his love for sumo, has struggled with his small stature all through his career. Now, he is thinking about retiring, and he has 15 days to make the most out of it!
Chinmi, an orphan who lost his parents in a tidal wave, is a promising sumo wrestler. Even though he did very well in the junior championships, none of the sumo scouts were interested in signing him because of his body, which is unsuitable for sumo wrestling, and also because of his weird sumo style. But luck comes his way when a small sumo school owner shows an interest in him and decides to take Chinmi into his school. There Chinmi begins his training to become a yokozuna...
The story follows Matsutaro Sakaguchi, a giant roughneck man with strength far beyond ordinary people. He never uttered words like "work hard," "strive," and "dream" like the typical shōnen manga protagonist. However, he is stronger than anyone and peerless in sumo wrestling. His greatest weakness is his own carefree personality. He grows into a full-fledged sumo westler.