tl;dr: This is a bukkake and gokkun film. Akari Mitani eats dozens (100+?) loads. That's all you need to know.
Scene 1: Akari Mitani greets the many men who will nut on her face. She gives a few head, and then they all begin finishing on her face.
Scene 2: She blows a vibrator before sticking it in her. Giving a few guys head, she gets deep. They all nut on her face.
Scene 3: Akari Mitani has a nice makeout session with a guy. Suddenly dozens of guys appear, and they get to take turns having time with her: giving her head, getting rimmed buy her, fucking her missionary, cowgirl, etc. She blows dudes while getting fucked and gets the loads right where you'd expect: on her face, in her hair, in her mouth.
In one really hot part, she gets load after load in her mouth and holds several guys' loads at once. She swallows them before going back for more.
Scene 4: Wearing red lingerie, she greets dozens of men once again awaiting her. Selecting one lucky volunteer who gets to give her head and fuck her doggy style and cowgirl, she soon starts giving handjobs to other guys at the same time.
Then she begins eating load after load which cover her face. Dozens of them.
Scene 5: Akari Mitani appears with the director, Masaki Nao. They kiss, and the director fingers her, and gives her head.
Masaki Nao holds her head in place as she receives the loads, and they share kisses with the loads. Many more dudes nut on her face and in her mouth.