Kotone Aizuhara, a hardcore BL fan, is run over by a truck while browsing for more bl books and suddenly transported into another world. This is how he finds himself in front of Nagi, a very handsome but strange-looking man who tells him he's a Sacred Beast and Kotone is his Chosen One, that he's been waiting for him and their wedding night forever! Kotone wants to preserve his virginity at all costs, but his body cannot help but respond…!? A very confident bottom all tied up by a Beast's love, in this erotic BL world!