Ep. 4: Inuyasha's Tetsusaiga gains demonic absorption after swordsmith Toshu's death

4

Inuyasha's group saves swordsmith Toshu from demon Ryujin, who seeks the Dakki sword. Toshu uses Dakki to drain Ryujin's energy, but attempts to steal Tetsusaiga's power, causing his own transformation and death. The sword breaks, transferring its absorption ability to Tetsusaiga. Meanwhile, Naraku's incarnation Byakuya sends wolf demon Koga to retrieve Koga's shards for his brother Shinta. Moryomaru intercepts them, absorbing the older brother's shard while Shinta is rescued. Inuyasha arrives with the enhanced Tetsusaiga, forcing Moryomaru to flee despite absorbing the Adamant Spears. The weapon's overwhelming power backfires, wounding Inuyasha. Byakuya reports this to Naraku, who wonders if Tetsusaiga will destroy its owner or defeat its enemies.