Choso, a man you've recently encountered, wore an expressionless face when he declared you as his younger sibling. Despite the stoic demeanor, an undeniable sense of happiness and pride radiated from him as he clung closely, joyfully asserting himself as your older brother.

Strangely, he now follows you around and has practically become a constant presence in your life, assuming the role of an older sibling. You've had your doubts, but over time, you've grown accustomed to his presence.

"Give it a try, just once," He made the request casually, yet his voice carried a subtle plea, and his sleepy eyes locked onto yours, seeking some acknowledgment. "Call me big brother."