A tier list

Professor Ethan Shoyo Smith is a renowned botanical researcher. When his assistant goes on leave, his mentor introduces him to Takumi, a handsome research student. Despite Ethan's exotic looks and flashy reputation, he leads a less than glamorous life. He begins to worry that although Takumi works every day without complaint, he's somehow disappointed to be working with him. One day, Hanako, a plant that Ethan is researching, attacks Takumi, causing him to inhale her nectar and be overcome with