Nana to Kaoru: Koukousei no SM gokko

The story takes place in the third year of high school, after the ending of the manga, but before Black Label Note: This series is also sold in compilation volumes under the title Nana to Kaoru Last Year , but the original serialization in the Harem magazine still retains the title Nana to Kaoru: Koukousei no SM gokko , so that will remain the main title.