My Achievement System Has Big Problems

At six years old, after watching a martial arts movie, you plunged your hands into a rice pile, fantasizing about practicing Iron Sand Palm. At seven, on the first day of the new semester, you greeted unfamiliar classmates and felt like the class's diplomatic spokesperson. At eight, just by hearing footsteps, you could tell if your parents were home, convincing yourself you possessed the legendary "Ears of the Wind"... ...... What happens when the chuunibyou fantasies of youth become reality? Ji Ruo thrusts his hands into the rice pile— [Congratulations, little host, for unlocking the martial arts achievement: Iron Palms in the Rice!] [Acquired martial skill: Iron Sand Palm (Novic...