Yellow

Yellow obtained 'Back From The Dead'

Yellow unlocked the drill 'Dakuten Drills Round 3: だ to ど'

Yellow read the lesson 'D by Dakuten: Hiragana from だ to ど'

Yellow obtained 'Drill Baby Drill'

Yellow obtained 'Mind Like A Steel Trap'

Yellow unlocked the drill 'More Consonant Changes: た to と'

Yellow read the lesson '"T" Sounds: Hiragana from た to と'

Yellow unlocked the drill 'Dakuten Drills Round 2: ざto ぞ and Vocabulary'

Yellow read the lesson 'Dakuten Changes S to Z: Hiragana from ざ to ぞ'

Yellow unlocked the drill 'Changing Consonants: さ to そ'