Lovely Allergen

Disclaimer: This story is NOT MINE. This is for the offline reading. All the credits go to the original author and translator.
Description
Song Yu has three requirements for Yue Zhishi:
- You cannot call me gege in public.
- We won't do anything together in public.
- You cannot let other people know you live with me.

Yue Zhishi has always been obediently following these rules. They were practically strangers at school. At the opening ceremony, he suddenly collapsed due to an allergy-related asthma attack, sending everything into chaos. At this moment, the student representative Song Yu suddenly stopped speaking.......

That night, a hot post appeared on the school forum.

【Shock!! Our junior high school department male idol and our senior high school department male idol are actually 'brothers'!】

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Ever since his father brought back a mixed-race baby when he was six years old, Song Yu's life has been completely entangled by this clingy little guy who couldn't speak Chinese well.

Le Le who was in kindergarten: Xiao Yu gege, my classmate said today that he has a beautiful sister-in-law. What is a sister-in-law?
Song Yu: His older brother's wife.
Le Le: No! I don't want a sister-in-law!
Song Yu: ........
Le Le: I'll be your sister-in-law! (Something isn't quite right.......)
Song Yu: Please study up on Chinese familial relationships.
Le Le: Wait, wait. I'll be my sister-in-law!
Song Yu: ......

Mouth says one thing but body does the other, cat-like gong x mixed-race, obedient and straight forward puppy-like shou.