Thread:PeaVZ108/@comment-8138569-20180524181754/@comment-30384301-20190629163423

So far, the only grass ninja in IaLR is the Grass Sword, Okay, I'll just give the short version of his backstory and his role in the story.

The Grass Sword used to be human who went by the name of Itachi, and he was Kyoji's training mentor. During the Japanese war that happened years ago, the Grass Sword joined Kyoji and his classmates to stop the Warlord from conquering Japan. While they were successful in getting rid of the Warlord, the latter had erased his memories and transformed him into a grass demon in the process. As a result of this transformation, the Grass Sword was lost and confused, with no recollection of his former identity, and had no choice but to survive on his own two feet in a deep forest. Thinking that he does not belong to leading such a life, he decides to seek for his true identity. He ends up coming face to face with the Warlord, albeit he has forgotten what the latter did to him, and seeks help. The Warlord agrees, in exchange of asking the Grass Sword to take down Kyoji.

In Two Swords, the story before Dark Reign Again, the Grass Sword shows up to attempt taking out Kyoji and his friends, with some aid from Shadow Kyoji, and ends up getting killed by Kyoji, who did it by accident. In Dark Reign Again, the Warlord revives the Grass Sword after having seen that he is not completely useless in helping him, before tasking him to trick the gang into undoing the Warlord's curse. The Grass Sword realizes the truth after the Warlord's curse is lifted, but gets hypnotized before he can rebel against the Warlord. He had two attempts to eliminating the Locked Room Gang afterwards, but he has failed in both, and is currently knocked out unconscious. He will return later though.

In shorter shorter words, the Grass Sword is not evil but only committed evil deeds because he was manipulated by the Warlord into doing so.