This movie is in Japanese which I can't speak, so I'm not 100% sure what is happening.
This is a "Watch that stops Time" movie which very much aimed at people who like messy/slimey sex. It stars Ninomiya Waka as a teacher, and Iori Izumi and Komiyama Emari as schoolgirls. The movie starts with a male teacher stopping time, posing, groping and stripping the 3 girls, it precedes with him taking them one by one to a different room to be posed, painted and fucked. The paint used on the Schoolgirls is particulary slimey/lumpy for fans of Wet & Messy sex, while the paint for the female teacher looks more like liquid latex. The movie contains WAM sex, blowjobs, fingering, handjobs, missionary, sideways, cowgirl, reverse cowgirl, doggystyle and facials