Sequel to "Thoroughbred wa Nabikanai". Thoroughbred, Shiba Toshimasa, and lion, Shishidou Ouga, are childhood friends and now lovers. However, the discussion of engagement has arisen with the oldest son from a good family and friend to the Shiba family, thoroughbred Touma. Despite Shiba asking Touma for the engagement to be forgotten, Shishidou still learns about it…?!