Kogitsunemaru Has Definitely Not Fallen into Darkness

This is the story of how one team of Tsukumogami mistook him for a corrupted Kogitsunemaru, then an entire citadel of Tsukumogami and its Saniwa mistook him for a corrupted Kogitsunemaru, and finally the whole world came to believe he was the corrupted Kogitsunemaru himself.

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Li Di, male, high school student, and a reincarnated person from another world, agrees at his cheap older sister's urging to take her place onstage at a convention. While researching the character he has to cosplay, he discovers that he's not tall enough.

Di: ...

Kogitsunemaru is 189 cm tall. He's 172 cm.

Di: I'm a whole head shorter than him, Sis... And why is my hair still black? The clothes are a completely different style and color, too. Do we really need this many bags of fake blood?

Cheap Older Sister: Because the theme is a Dark Citadel! There'll be lots of die-hard fans, so make sure you look convincing. :)

Di: A chill ran down his spine.

Who could have guessed that just after he finished cosplaying Kogitsunemaru, he'd end up in the middle of nowhere, surrounded by randomly spawning berserk monsters and saddled with a bleeding debuff, embarking on a one-way journey.

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Including, but not limited to:

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Getting rubbed into the ground until his other personality awakens.

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Being rescued by Merlin-senpai just as his HP is about to hit zero.

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Being picked up by a team of little daggers returning from an expedition and taken to their citadel.

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Getting cuddled by a whole bunch of Kogitsunemaru at the Trading Post.

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A few things to know before reading:

1. Third-person narration, no CP, but everyone ships everyone. Bonus chapters will very likely feature cuddles.

2. This story has been in the works for years, and I've finally resolved to finish it. Updates will drop randomly every other day.

3. The male lead has two personalities, one modern and one from another world.

4. Includes original worldbuilding.

Theme: Keep persevering and stay pure forever