My Achievement System Has a Lot of Problems

When you were six, after watching a martial arts movie, you stuck your hands into a pile of rice and imagined you were practicing the Iron Sand Palm. When you were seven, you were the first to greet a new classmate at the start of the school year, and decided you were the class's diplomatic spokesperson. When you were eight, you could tell your parents were home just by hearing their footsteps, so you figured you had superhuman hearing... What happens when the chuunibyou fantasies of your youth become reality? Ji Ruo stuck his hands into a pile of rice. [Congratulations, little Host! You have unlocked a martial arts achievement: Iron Palms in the Rice!] [Martial art obtained: Iron Sand Palm (Beginner)] [Skill proficiency can be gained through repeated activation. Heaven rewards diligence, little Host, so keep it up~] Ji Ruo's mouth twitched. He felt that his achievement System wasn't quite right. After thinking it over, Ji Ruo picked up a small stick and headed toward the rice paddy nearby...