Contains the following works: 1. Colorful ♥ Galfriend 2. Horny Switch ♥ 2.5 Horny Switch ♥ After 3. Horny Switch ♥ ~Relative Girl~ 4. Sex Friend 5. Sex Friend-chan 6. Postponement ♥ Galfriend 7. First Experience 8. Sex Practice 9. Secret ♥ 10. Secret Girlfriend 11. Spoiled Little Baby 12. Public Fuck Show 13. Everyone Fuck Show 14. Takeda's Orgasm Gal Observation Diary 15. Sister Development