1. Pick a mission: ① Initials ② Finals ③ Both ④ Vowels ⑤ Bonus (double consonants, unlocks after ①).
2. All 5 missions share the SAME 10-chapter story — "K-POP Fan's Trip to Korea." Use ‹ › to move between chapters.
3. Tap any syllable. It splits into 초성(red)·중성(blue)·받침(green) — parts that aren't your mission's target turn gray.
4. Sound plays automatically for the target part, and every English translation sits right below the sentence.
5. Progress adds up across all 10 chapters — keep browsing until every letter in a mission is checked off.