Due to her parents' work, Serina Aoyama is staying with her father's best friend, Dr. Yamada, a doctor of engineering. Her son, Susumu, is strong despite his cute face. After all, he's a cyborg! (Source: Manga Library Z, translated) *Note: Includes the one shot Saint Valentine Wars (セントバレンタイン☆ウォーズ).*

1. **Katte ni More Better** (勝手にモアベター) 2. **Sea Feaver** 3. **Soumon** (相聞) 4. **Hai Anxiety** (ハイ・アングザイエティ) 5. **Good Luck** (グッドラック)

*Note: Includes 1 extra chapter.*