Senjuro couldn't find anything about the Seraphic Breathing in the records, so basically, if I want to know something about it, I need to ask directly to Shinjuro.

The problem is if he will want to answer me.

I sighed in front of his room.

I slightly knocked the wall beside the shogi door, announcing that I'm entering.

After opening it, I see him sitting on his futon, a bottle of sake in his hand as he looked outside.

"Excuse me, Rengoku."

No answer.

"What you said before, about the seraphic breathing, I would like to know more about it."

….still no answer.

"You-"

He suddenly cuts me. "For my son to be saved by an ignorant fool like you, he really is useless."

"..... I apologize in advance for saying this. I understand that you feel sad for your loss, but you don't have time for it. You do realize that one second late and your son would be dead, right? He is a demon slayer, he might be dead tomorrow, next month, or even today, that how this job is. Do you really want your last words to your son to be insults? You don't have time to grieve. Or at least, not in this way of grieving."

His grip in the sake bottle got stronger.

"If your wife saw this, she would be very disappointed with you."

In response, he threw his bottle in my direction, the object hitting the wall beside me and breaking into pieces.

One of the shards made a cut in my cheek, and part of my clothes was wet with the alcohol.

"… I'm sorry for the intrusion. Excuse me….also, Senjuro said he's not mad about before."

Maybe I shouldn't have said anything, but…I can't.

Though I don't know if my words got through him at all, I will at least apologize for mentioning his wife next time we see each other, it was indelicate of me.

I'm happy that Kyojuro is alive…but, so many things are changing.

It's the first time that I got this far, I always died trying to save him. And now, without Ether, I will lose all of my progress if I die again.

That's why I need to get stronger. It doesn't seem like I will get any information from Shinjuro, so I will have to work with I already know.

Seraphic Breathing.

It was a breathing that I made in my first life together with Yoriichi.

But…I don't think I'm the original owner of it…

Even though I 'created' it, I have no idea about its properties or origins, it only came naturally to me.

Ether probably knows something about it, but I can't contact him right now.

So I'm back at square one.

"Y/N! What happened to your cheek?" Tanjiro exclaims when he noticed her standing at the end of the corridor.

"Oh, Tanjiro! Did you finish reading the records about the Sun Breathing?"

"About that, it was completely destroyed…"

"I see, but don't worry! We will find another way!"

"Yeah but- WAIT! Don't change subject! How did you get hurt?"

"…. I talked too much."

"?"

"Senjuro and Kyojuro are already outside right? I'll say goodbye first!"

"But-"

"You wanted to say farewell to Rengoku's dad too, right? See you later!"

☆

Recently, Tanjiro noticed a recurrent habit of Y/N.

She never talks about what conflicts her.

Though he didn't comment anything about it, after the mugen train incident, her smell changed a bit. Even though she still acts the same as before, her smell is more…melancholic…?

He thinks it's related to what she dreamed about when Enmu put everyone under the spell, but he didn't find the time nor the courage to ask about it.

He's worried about her.

She's like cracked glass, ready to break at any moment.

He just hopes that he's there for her when she breaks.

♡

"RENGOKUUU! SENJUROOO!" Y/N exclaims when she sees they both waiting outside.

"What happened to your clothes?" Senjuro asks, approaching her with a worried expression when he notices her skirt drenched.

"I got into a little disagreement with your father, but it's nothing to worry about." She says in response, smiling gently and patting his head.

Rengoku approaches her, she assumed he was going to say goodbye, but what he did was put his hand on her cheek.

She squeaked in surprise with the sudden touch, her face completely red.

But then she noticed that he was only checking the cut in her cheek, she held back her disappointed sigh.

"I'm sorry for his behavior."

"I-it's no problem at all!"

'In fact, I should thank him for letting me have the pleasure of Kyojuro touching my face.'

"By the way, you still owe me that date, right?"

"!.. I suppose I do." He says, letting out a cheerful laugh, it's good to see him in his bright personality again.

Senjuro looked at both of them before blurting out. "Are you two going to marry?"

They both had extremely diverse reactions to this question.

Rengoku choked in air and started violently coughing with a red face, and Y/N let out a goofy laugh while giving harsh slaps to Senjuro back. "You shouldn't give me those ideas!" She says, it was hard to tell if she was joking or not.

"… But now that I think about it, it really is a wonderful idea! That would make you my family, right?" He responds back, his eyes sparkling.

"Well, I guess so?"

"Eeeh?!" They all turned to see Tanjiro standing there with a perplexed expression.

'I just left her alone with them for five minutes, and they are already planning marriage?!'

"Y/N is not marrying him!"

"Why?"

"Uh- because- well…"

"Are you two dating?" Senjuro tilts his head with a sad look.

"We….are….not?"

Though he did kiss Y/N before, they never really addressed anything about it. In fact, Tanjiro took so long to make that much progress with her and Rengoku already managed to jump straight to marriage in one day, how unfair is that?!

"Why are you all screaming in there?" Sanemi suddenly appeared.

"Oh, you're still here?" Y/N says with a disinterested expression, an irk mark appeared in his head.

"You brat-''

"Ah! Don't tell me you came to say farewell to me!" She says jokingly, only for him to turn away with his cheeks slightly red. "Eh- don't tell me I got it right…? Oh my god, I did! I didn't know you had such a cute side to you!"

"Shut up! I hate you!"

"Ehehe."

"Stop laughing like that, it's giving me the creeps-"

"Fine, I'll stop. Until later Sanemi, Kyojuro, Senjuro, thanks for having us."

"Thank you for having us." She says politely bowing, Tanjiro also bowing beside her.

As they started to turn away, another loud sound caught their attention.

"Hey you!" Shinjuro appeared, he still looked mad, but less than usual.

He slammed an old book against Y/N chest.

"Here."

Y/Y silently looked at the contents.

It's…records about Seraphic Breathing?

"Thank you."

"Humph."

He turns back to inside the house, slight patting Senjuro head in the way, who just touched the place where he had touched with a confused expression.

Sanemi then whispers to Y/N. "Are you a Rengoku enchanter or something?"

"Shut up, grandfather."

"WHO ARE CALLING GRANDFATHER?!"

In response, Y/N harshly stomped in his foot and grabbed Tanjiro hand, running away.

"COME BACK HERE, BRAT!"

"BYEE, DON'T FORGET OUR DATE KYOJURO!" She screamed as they got further from the house.