Sakamoto Ryouma, Wiki

That Time I Got Reincarnated as an Omni Dragon Lord - BIO (Updated) - Wattpad

Ryouma Sakamoto, Hakuouki Wiki

Japanese version of WikiReader (Wiki leader), a small hand-held terminal that can carry Wikipedia, will be released - GIGAZINE

File:Tomb of Sakamoto Ryoma center.jpg - Wikipedia

Sakamoto Ryouma (Fate)

Takasugi Shinsaku, Fate/Grand Order Wiki, Fandom in 2023

Sakamoto Ryoma!, Wiki

Sakamoto Ryouma - Character (65433) - AniDB

One Piece World Journey - Ochoku was a member of the Rocks Pirates (Wiki said so as well) All the Rocks member are inspired by real life pirates, navies and privateers.

Sakamoto Ryouma (Lancer), TYPE-MOON Wiki

Sakamoto Ryouma (Lancer), TYPE-MOON Wiki

Tenshou no Ryuuma Manga

Sakamoto Ryoma: The Samurai Who Forged a New Japan - Unseen Japan

Why does Sakamoto Ryoma, who has never been to Hokkaido before, have a memorial hall in Hakodate?, by 周子愉 Fausto Chou