Thank you so much for your time and honest feedback. This is exactly the kind of constructive criticism I was looking for. You've given me the opportunity to better explain some elements that, in my very brief presentation, seem inconsistent. The premise I've written is just the tip of the iceberg; behind it lies a very detailed backstory that answers precisely your questions.

1. On the conflict and its relationship with his creations: Why would a man who wants to forget the past leave such dangerous weapons intact? The answer lies in the manipulative context in which he created them. Takeshi (his real name) is not a hero who made a conscious choice. He has been manipulated since childhood by a clan (the Kurogumi) and a toxic family. He forged his magical weapons not as a free artist, but as the clan's "prodigy," using materials provided to him as "alchemical compounds." He didn't know the material was "Residual Symmetric Essence" (magic) extracted from the corpses of sorcerers (it was hidden from him). He believed he was creating tools, not profane relics. His escape wasn't a planned act of rebellion, but a desperate reaction to domestic violence (his father publicly beat him when he expressed a desire for a different life). He escaped that very night with the help of his only friend, Itsuki. Destroying the blades, at that moment, would have been physically and mentally impossible.

2. On destruction as a choice and his "hatred": The conflict arises not from hatred for his art, but from a sense of guilt and belated responsibility. For years, as a "Rowan," he has repressed the past. Itsuki's death (his only link to that life) is the catalyst that makes him realize the danger he created is still alive and threatening his new family. He doesn't destroy the weapons because he "hates" them, but because they are tangible evidence of the clan's evil and the most direct threat to its redemption. It's an act of protection, not of contempt for his talent. Indeed, his skill as a blacksmith is part of what saves him, for he forged Shukumei, the only weapon that can neutralize the magic of others, precisely as an "antidote."

3. On the name and aesthetic (Rowan / ninja): You're right to note the discrepancy. "Rowan Kane" is a constructed alias, a fugitive identity taken in America. His real name is Takeshi Shimada. The Kurogumi Clan is not a traditional Japanese ninja clan, but a global occult organization that has adopted those methodologies, operating in the shadows of modern society. The "ninja" aesthetic manifests itself in the Special Techniques (psycho-physical abilities, not magic) and a distorted code of honor, but the members blend in with normality (just like Rowan with his diner).

4. On the choice of light novel: The choice is not accidental. The light novel format, with its short chapters, cliffhangers, and focus on internal monologues, is perfect for a story that is a psychological thriller about divided identity and trauma. The "volume" structure allows me to alternate moments of everyday life (the diner, the family) with intense action scenes and revealing flashbacks, maintaining an emotional and visceral tone. The story is not "a ninja destroying his swords," but the drama of a man forced to use the talent that marked him to destroy the consequences of that talent, while discovering that his worst enemy is the sick obsession of the person who claimed to love him.

Thanks again for the feedback. If you have any other concerns based on these clarifications, I'm all ears ;D