this could just be me but i think the little brother may already know (and this is completely based off what i would do) because the MC introduced himself as his olders sister's "younger sister" and i know i personally would ask the older sister if she had a younger sister to make sure i'm not talking to some creep. but this is complete baseless
Same! That's what I thought too
True! And it has me thinking the “little brother“ is always messaging the mc. Like is he even messaging the older sister anymore?
Where did you read the 3rd chapter at??
The 3rd chapter is the cutest shit ever I hope the brother doesn’t mind the mc is actually a guy