Issue: #4
Chapter TitlesChapter 016: The Heart... (心は、... "Kokoro wa...")Chapter 017: Transmitted Heart (伝わる心 "Tsutawaru Kokoro")Chapter 018: Tuning (調律 "Chōritsu")Chapter 019: Prelude (前奏曲 "Zensōkyoku")Chapter 020: Polka "Raimei and Raikō" 1 (ポルカ「雷鳴と雷光」① "Poruka "Raimei to Raikō" 1")Chapter 021: Polka "Raimei and Raikō" 2 (ポルカ「雷鳴と雷光」② "Poruka "Raimei to Raikō" 2")
Creators: Yuhki Kamatani, Alexis Eckerman