If you're a fan of teacher-student relationships or relationships between step-siblings, I recommend this manga. So many other mangas similar to this usually have the student instantly in unrequited love with the teacher, but I like how this one has a slow developing relationship between them. The girl/student develops an attraction towards him, but hides it by often showing an indifferent and cold attitude. Meanwhile, the man/teacher has a sister complex towards her, but doesn't realize that his love for her is that of a lover. I eagerly await the next chapters!!