Primary

• Soujirou Seta Student of Makoto Shishio
• Soujirou Seta Rival of Kenshin Himura

Extended

• Kenshin Himura In love with Kaoru Kamiya
• Kenshin Himura Friend of Yahiko Myojin
• Kenshin Himura Rival of Hajime Saitou
• Kenshin Himura Student of Seijuurou Hiko
• Kenshin Himura Husband of Tomoe Yukishiro
• Kenshin Himura Rival of Makoto Shishio
• Kenshin Himura Rival of Soujirou Seta
• Makoto Shishio Rival of Kenshin Himura
• Makoto Shishio In love with Yumi Komagata
• Makoto Shishio Enemy of Hajime Saitou
• Makoto Shishio Teacher of Soujirou Seta