A few days have passed since that meeting, and then there is an awkward period of pheromone activity.

The active period of ABO is very ambiguous, because this term was first applied to wolves, so in fact, the active period is the same as the animal's desire for a mate, but for humans, the term is better.

The pheromones during this period will be very active, and Yu Chu is not sure if he can control it, in case he accidentally knocks down the well-behaved Britney......

She was very cautious and prepared to tell Yu Ran the news, but it was really hard to speak.

If they are related by blood, pheromones will not attract each other, and naturally there will be no other troubles. But she was able to be attracted to Yu Ran, but she was named a sister and brother with him...... That's more embarrassing......

She hesitated to walk out of the room, closed it gently, and walked to the innermost boy's room.

Knocking lightly on the door, Yu Chu waited quietly for a few seconds, and the inside was gently opened, revealing the slender height of the young man and his beautiful fair face.

He seemed a little surprised, raised a delicate eyebrow, and then asked softly, "Sister?" ”

His voice calling his sister is very beautiful, sweet and soft, soft as a little cute pet.

Yu Chu's ears couldn't help but be slightly hot, he lowered his head in a shrunken manner, and whispered: "Ah Ran, today is my life, active period." ”

The petite and soft omega, when he said this word, the tips of his ears were red, he lowered his head, his fingers twisted the corners of his clothes, and the whole person was like a boiled shrimp, and he continued to finish his words calmly:

"So, so, I'm not going out today, Ah Ran, no, don't call me for dinner."

Yu Chu stammered, but he really wanted to bite his tongue off. Meow a mi, blushing and stammering or something, it's so weak!

The young man's eyes were slightly dark, he blinked his long eyelashes, and responded obediently: "I know sister, I won't bother you." ”

After saying this, he bit his beautiful lower lip and showed a soft smile.

Yu Chu didn't think much about it, seeing that the young man responded so naturally, her sense of discomfort also weakened a little.

Well, it's a normal thing, what's there to be ashamed of......

Yu Chu breathed a sigh of relief and whispered, "Then Ah Ran, I'll go back first." ”

"Hmm." The young man narrowed his beautiful eyes and said softly, "However, if you need my help, you can call me, sister." ”

？？

Yu Chu looked confused.

Is there anything he needs help with during his active period?

To say help, except for that ......

The girl's face turned red all of a sudden, but Yu Chu tried to control his shyness, and when he looked at the young man's expression, he saw him blinking innocently and obediently, as if he was just saying it casually.

…… Maybe it's a casual concern? After all, this kind of caring language is quite common.

The omega nodded ignorantly.

The smile on Yu Ran's thin lips deepened, and her beautiful eyes bent into a beautiful arc, watching the girl turn back to her room, and look back at him before entering the door, showing him a friendly and soft smile.

Sister......

The young man's dark purple eyes were darkly surging.

Delicious sister, always enjoy it slowly.

You won't eat it in one bite. Don't worry, sister.

……

However, in the evening, after taking a bath, Yu Ran tied up his pajamas and wiped his beautiful flaxen-colored hair, but heard a knock at the door.

The boy's movements paused.

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