Kokuhaku Yokou Renshuu Series
告白予行練習シリーズ
Volumes in the series:
1. Kokuhaku Yokou Renshuu (Confession Rehearsal)
2. Kokuhaku Yokou Renshuu: Yakimochi no Kotae (Confession Rehearsal: A Solution to Jealousy)
3. Kokuhaku Yokou Renshuu: Hatsukoi no Ehon