We had little understanding of In-Camera VFX in Japan at that time. So we repeated test shoots 4 times and ensured all crew had a deep understanding in the In-Camera VFX system before the shoot. Furthermore, in order to shoot realistic documentary-style video, we needed many situations. So 6 full CG background scenes were created and 14 live-action backgrounds were shot, and a total of 20 scenes were created and prepared in less than two months. We repeated rehearsals to finish the shoot in two days.