Reincarnated into demon slayer!?

Part no.7

I found myself jumping into the battle, saying the form in my mind so as not to let the demon know that I'm behind it.
Reminds me of the time I went behind Giyu. That's besides the point, though.

'Crystal breathing, 7th form: Cold chains of the past!' Suddenly crystal chains started latching onto as many hands they could and the demons legs(?). The startled demon soon snapped out of it suddenly, seeing another brat in its way.
"You brats don't know when to back off! Oh well, free dinner!" The demon shouted while cackling after.

Soon enough, the hand demon recognized Tanjiro's mask and smiled sadistically "Another one of Urokodaki's brats! Heh, I wonder how he'll react when he finds out another one of his precious students isn't coming back. Oh, I can only dream!" I was baffled by how horrid the scene was in person and how the demon knew the name. Tanjiro beat me to the question, asking quickly, "How do you know my trainer, Urokodaki?" Tanjiro asked,alarmed. The hand demon got angry, remembering old times. "He's the one who put me in this hell hole! Damn him, damn him!!!" The said demon continued, having a mini tantrum.

I was surprised that he turned from being menacing to being so childish, but the demon continued. "So I started killing all his students to get back at him. You'll be the 14th! But there were two that oddly stuck out to me, one with peach hair and an odd looking scar on his cheek.. he was the strongest but not strong enough! The second one was a black haired girl with blue eyes and awfully agile, but when I told her this, she went into a rage.. so.. I ripped her limb from limb!" It laughed on and on about the deaths.

Tanjiro started having inner dialogue. 'No... it can't be... Sabito and Makomo!" He thought in rage.
'Ah shit, he's gonna try and jump the demon but then knocked the fuck out.' I thought to myself.

Soon enough Tanjiro jumped at the hand demon chanting his water breathing forms.
'Heh.. the brat fell for it, time for another revenge session against Urokodaki.' The green demon thought.
I wasn't gonna let the mans get bitch slapped with a fist though, so I shouted with a battle cry "Meme breathing, first form: Idiotic blast!" I stabbed him in the arm that was gonna hit Tanjiro.

Said male gave me a smile of appreciation for a split second, then turned back to the demon.

'Huh... what is this!? I need to kill the brat! What even is a doge!?' The hand demon thought to itself during the time it was distracted. 5 seconds passed, and the demon snapped out of it. During that time, Tanjiro started running up the arms to decapitate the demon. Said Demon started having more inner dialogue. 'This brat can't cut through my neck. It's too thick! When he fails, I'll rip him to shreds!' That didn't happen, though.

Soon enough, the demons head was flying off with a

Shing!

Sorry if it was short! I suck at fighting scenes!

Thus, the journey continues.