DISCLAIMER: I DO NOT OWN KIMETSU NO YAIBA OR ANY ASSOCIATED OBJECTS, INTELLECTUAL PROPERTY, ETC. THE STORYLINE, CHARACTERS, AND OTHER WORLD ELEMENTS , AS WELL AS OFFICIAL ADAPTATIONS, BELONG TO KOYOHARU GOTOGE, SHONEN JUMP, AND UFOTABLE.

Tonight had been a long night for Tanjirou. First, there was the meditation and the rest of his wind-down routine; then, Shinobu had stopped by to talk to him. He still sported a blush, as he remembered the tail end of their conversation.

Shinobu stood up, preparing to leave. But as she moved to leap off the roof, curiosity lead Tanjirou to speak. "By the way, Shinobu-san", said Tanjirou. "You said that you use Insect Breathing, correct?"

"Yes, that's right," replied Shinobu. Head tilted, she stared at Tanjirou with crossed eyes.

"Then, does Tsuyuri-san also use Insect Breathing?" asked Tanjirou.

"No. Kanao was my older sister's student, so she uses Flower Breathing, like her." Shinobu smirked. "Why?"

"No, it's nothing!" Tanjirou frantically waved his hands. "I was just curious, since she's your Tsuguko."

A gentle laugh escaped Shinobu. "She is my Tsuguko now, but she trained under my sister." She leaned in close again. "But I am curious… why did you ask about her?"

"N-no reason! Can't I just be curious?" Tanjirou's protestations only lead Shinobu to chuckle more. "Alright, if you say so."

She poised with one leg bent. "I'd best be off, so I'll see you tomorrow." She leapt off the roof, leaving a flushed Tanjirou.

Tanjirou muttered as he walked. "What did Shinobu-san say her older sister's style was? Right, Flower Breathing. Why does that remind me of something….."

And suddenly, he remembered.

'Big Brother, Big Brother!' Hanako and Shigeru gazed at him with mischievous eyes. 'What is it?'

Giggling, they covered their mouths with their hands. Shigeru smirked as he asked 'What sort of girl does Big Brother want to marry?'

'How am I supposed to answer this?!' he thought. "I've never thought about marriage before!" But his siblings' expectant eyes demanded an answer. After some thought, he decided on a metaphor which they would be able to understand. "A Shiba inu that's like a lily of the valley!"'

"Big Brother wants to marry a dog!" they cried. It took some time before Tanjirou's protestations managed to convince them otherwise.

"Ah, so that's what it was", he thought. "Kanao uses Flower Breathing… lily of the valley…." A blush appeared on his face, before fading as he shook his head. "What am I thinking?! That's just a coincidence. And that was a metaphor!" Interlacing his hands behind his head, he walked back to his room. "That's just a coincidence."

But even though he tried to forget, the lily of the valley still bloomed in his heart. And so, the next day…

"Kanao! Kanao!"