Part 3 exclusive to Hikage Hinata. An innocent girl's first attempt at throat development, which she has always dreamed of. For students who want to try real Irama but are a little worried about going on to Irama, a perverted teacher provides a thorough and obscene education. She smiles and is filled with masochistic joy as she feels her mouth being filled in a way she has never felt before. The girl, who has learned about her pleasure, seeks stimulation herself and sucks her penis deeply.