Selesai Tayang
| Ep. | Judul |
|---|---|
| 12. | Always HAPPY in the Heart! 3.9 01 Jan 1970 |
| 11. | One Centimeter to HAPPY 4.3 01 Jan 1970 |
| 10. | HAPPY Old Men 4.2 01 Jan 1970 |
| 9. | HAPPY Dice 4.5 01 Jan 1970 |
| 8. | HAPPY Endless Summer 4.0 01 Jan 1970 |
| 7. | Let's happy kiss our way to HAPPY Flutter Kicks 4.1 01 Jan 1970 |
| 6. | HAPPY Identity 3.9 01 Jan 1970 |
| 5. | HAPPY and Beautiful 4.1 01 Jan 1970 |
| 4. | It's A Wonderful HAPPY 4.2 01 Jan 1970 |
| 3. | HAPPY Ice Cream Happy Ice Cream (HAPPYアイスクリーム) 4.2 23 Apr 2018 |
| 2. | HAPPY Recipe Happy no Recipe (HAPPYのレシピ) 4.1 16 Apr 2018 |
| 1. | The Suddenness of HAPPY! KISS Happy! Kiss wa Totsuzen ni (HAPPY! KISSは突然に) 4.0 09 Apr 2018 |
