Ryohei Sasagawa (笹川 了平, Sasagawa Ryōhei) is a fictional character in the anime and manga series Reborn! created by Akira Amano. He has also appeared in other media from the Reborn! franchise including video games and light novels. Ryohei is portrayed as one of the series' protagonists, and is introduced as the energetic member of the boxing club at Namimori Middle School. He would often attempt to get the main character, Tsuna Sawada, to join his club, and in response, Tsuna's home tutor, Reborn, attempts to get him to join Tsuna's personal Mafia family. His role is initially minimal, usually only having brief appearances since his introduction. Becoming the Vongola Family's Sun Guardian is what leads to his first significant and recurring involvement in the story.