It's quite good short drama; beautiful, cute, sweet romance and really sweet chemistry. it's about forbidden love and taboo. We have seen this plot earlier, but still it's really good and worth to watch. Also unlike many (especially Jdramas) other dramas with teacher/student romance, it's not dark and hard watch.
Plus beautiful main leads make watching more enjoyable.

Acting is good and natural. Tor really is good actor with amazing (and very cute) facial expresiones. it's my third drama of him and I like him more and more. Female lead did decent job too.

It's good sometimes to see drama with no cliches, primitive details and banal plot turns.