When he was away with his sister, his family was brutally eaten by a demon.. Ever since then, he swore to himself he will get his revenge.
Heavily inspired by Demon Slayer so the story will probably be a bit identical. It's also obviously not canon...
Asahi: Here take a look at this rock! Isn't it shiny?
Mitsuri: Mhm! And that one too!
Mitsuri and I have spent hours just sitting here looking at rocks.. Uh I'm not sure why, but I enjoy her company.
It's almost close to night time, time to go hunting. I've never told anyone this, but ever since a few nights ago, I've decided to go hunting demons at night to get some information.
Asahi: Oh I'm sorry, Mitsuri-san. I have to go now..
Mitsuri: Oh so soon? Do you have a mission?
Asahi: Well, not really. There's something I got to do right now.
Mitsuri: Want me to follow?
Asahi: No.. It's alright. I'll be fine..
There's a sad expression on her face.
Mitsuri: Just stay safe, alright?
Asahi: Of course, I will! I'll be back soon.
I took off.
After some time, I've finally encountered a wild demon. It seems to be following a young woman.
I rushed and push the demon far, then I cut off all its limbs. It's a weak demon, so it can't regenerate that fast.
Demon: What the hell?! I didn't even hurt the girl!
Asahi: Shut up. I want you to give me information about a certain demon.
I started to describe the demon's appearance.
Demon: T-That guy is a Upper Moon 6 !
Asahi: I don't care.. Now tell me.
Demon: I-I heard he likes to hunt his prey at specific areas... I think there's a lot of rare blood humans there!
Asahi: Tell me the locations.
He told me all of the locations.
Asahi: Thank you for your service, good night.
I cut off its head.
Well.. well I've got you now, you bastard. I'll avenge my family's death by making you suffer like how you made all of us suffer.
I head back and see Mitsuri there waiting at the front.
Asahi: What are you still doing here? It's late already..
Mitsuri: I was worried..
Asahi: Oh haha! Don't worry I'm fine here! Come let's head inside.
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The next morning
Mitsuri: Morning, Asahi! Come let's eat breakfast.
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Asahi: Sure!
Tanjiro
I walked outside my room then saw Asahi eating with Mitsuri. They look cute together, heh.
Suddenly, I heard someone called my name. I looked to the side, then I saw Rengoku motioning for me to follow him. I followed him into a room.
Rengoku: Okay, I think we're clear here.
Tanjiro: What's the problem, Rengoku-san?
Rengoku: Well, it's about Asahi. Have you noticed he's been quite suspicious lately? Like going out at night even when he has no missions?
Tanjiro: That's actually true... What do you think he's up to?
Rengoku: I'm not sure too.. But I'm quite worried.
Tanjiro: What if we follow him if he goes out again?
