Whoa, I did not know this!
Thank you, loicos
From the cover I can see that:
Shin Manga Nihonshi (New Manga Japan History) is a magazine that tells Japanese history in manga form, and the latest issue, issue # 35 (490 Japanese Yen) is focussed on the history of Sumo, and Raiden (no, not a robot XD) the best Sumo wrestler in the history of Sumo, with the career record of 254 wins & 10 losses, an (astonishing ^^) 96.2 % winning rate, with the cover page of Raiden drawing by Arakawa-sensei
and one-shot by Arakawa on Raiden inside the magazine.
I only know Raiden (yes, I'm pretty sure he was the Raiden-18
's name-sake) was a famous Sumo rikishi
(sumo wrestler) but not much else. I want to read this one!