Mr. Saki, who has been assigned to a new all-boys school. Thinking that every student seems full of energy and can shoot semen endlessly makes him unable to stop getting excited. Unable to control his perverted tendencies, Mr. Saki performs fellatio in the toilet on his first day and swallows it. With his desire to swallow semen ignited, he starts extracting and swallowing semen from students standing in the hallway. His desire to swallow escalates further, leading him to perform a continuous series of deep-throating five students and swallowing their semen as part of his oral instruction.
