I don't know what my little sister's friend is thinking!

My younger sister’s friend remains a complete mystery to me! Chie-chan has a close companion named Tsyu-chan, but her thoughts are utterly incomprehensible to Chie’s older brother. This puzzling dynamic has become the focus of an ongoing Twitter series, which has been officially translated with the original creator’s approval. The brother finds himself constantly baffled by Tsyu-chan’s unpredictable behavior and enigmatic expressions. Despite observing their interactions daily, he still can’t decipher what goes through her mind. The Twitter posts capture these amusing yet confusing moments between the trio. Readers enjoy following the brother’s futile attempts to understand Tsyu-chan’s thought process. Each update reveals new layers to this quirky friendship that defies explanation. The series has gained popularity for its relatable portrayal of sibling dynamics and mysterious friendships. Fans eagerly await each new installment, wondering if the brother will ever crack Tsyu-chan’s code.