Gaiden 2, History's Strongest Disciple Kenichi Wiki

History's Strongest Disciple Kenichi Gaiden (史上最強の弟子ケンイチイ外伝, Shijō saikyō no deshi Kenichi gaiden?)

Gaiden 4, History's Strongest Disciple Kenichi Wiki

Shijou Saikyou no Deshi Kenichi Plus

De Olho no Japão: Mangá Kenichi Ganhará OVA

Kenichi Plus 2, History's Strongest Disciple Kenichi Wiki

Manga Like Hokuto no Ken Gaiden: Tensai Amiba no Isekai Haou Densetsu

The King Of Fighters Gaiden's 1st Chapter Is Out, and It's Great!

Tatakae! Ryouzanpaku Shijou Saikyou no Deshi Manga

Kenichi: The Mightiest Disciple (Manga) - TV Tropes

From Weakest to Strongest Martial Arts Mangaverses. Y'all agree? In terms of average power level, not quality. : r/Grapplerbaki

USED F/S Shijou Saikyo no Deshi Kenichi Gaiden+Plus Japanese Manga Matsuena Shun