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After (y/n) and nezuko got home, Aizawa, Rengoku, and Tanjiro was about to scold them, but got stopped by Zenitsu.

"Wait! (Y/n)-chan is not breathing will!" He said they then immediately checked (y/n) and found that she's sick.

Aizawa then called a doctor. When the doctor comes in, the doctor immediately check her up.

"How is she?" Aizawa asked

"She will get better, but you will have to get her drink her medicine. She also have to drink milk three times a day for her nutrients." The doctor said

"Thank you." He said and the doctor nodded then walked outside.

"Is young (y/n) gonna be okay?" Rengoku asked. "Yeah, she's going to be okay, she just have to drink the required medicine and drink milk three times a day." Replied Aizawa

"How did this happen to (m/n) anyway?" Inosuke asked

"Now that you mention it, she is perfectly fine this morning."said Tanjiro and the others nodded "nezuko what exactly happened?"

Nezuko slid off her muzzle and answered "demon...we...incountered a demon.... it's blood....demon....art is bubble flu." She put on her muzzle back

"So that means there's also demons that got transported here." Aizawa said

"If that's the case,we have to take turns to patrol at night!" Rengoku said and the others nodded "yeah! Lord Inosuke will be fighting again!! Hahahaha!"

Inosuke continued laughing but got shut up when a scarf got captured him. They then told him to be quiet.

"Okay since Inosuke really want to fight that badly I think the Tanjiro, Zenitsu, and Inosuke will have to patrol this night." Rengoku said
"but-" zenitsu got cut off by Aizawa "you also have to bring nezuko just in case, and this is also my time to patrol around so we have to stick together so you won't get lost."

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Taisho secret:
•when they are on a patrol, rengoku is the only one that has to take care of (y/n), so when he was about to go to bed (y/n) started coughing so he have no choice but to stay awake.