A doujinshi set featuring Hibari x Tsuna (or 10-years-later Tsuna) from 10 years in the future. I purchased this used and have read it a few times. The stories are connected across all the books. It has been stored in a dark place, so it's in good condition, but please be aware that it's an older item, so those concerned about minor scratches, etc., should take caution. No individual sales.