"Fa­ther's Old En­e­my: Ryukot­su­sei"<br>
Hop­ing to find a way to wield Tes­saiga, In­uyasha goes to To­to­sai, who in­structs him to de­feat Ryuukos­sei, an en­e­my who his fa­ther could not de­feat, in or­der to gain the strength re­quired to lift his re­forged sword. With Ryuukos­sei asleep, the task is sim­ple -​ un­til Naraku de­cides to wake the drag­on up.