Death, Enchantments, Fairies, Spirits...all these elements twist amongst themselves to offer a mysterious World End Fairytale for us. Join Koroku Morisaki as he unravels the truth that lies behind the conscience of several other characters with promising roles.

From ADV:
A pizza delivery boy must save the world! Young Kenta Akagi has never been anywhere except for his hometown of Lutzheim, where he currently ekes out an existence as a pizza delivery boy. Faraway places, strange foreign folks, the wars they fight, and the adventures they have are just stories to him, until he meets a young girl - the kind of girl that wars are fought over! People seem afraid of her, but Kenta doesn't understand why. All he knows is that he seems to remember her from somewhere, and that he has to protect her no matter what!

That's right, don't worry--please put your minds at ease. We are this suburb's own detective agency. No matter how small the matter, our company president will personally direct every operation. You won't have to worry about the clean-up either. We'll take care of it ourselves, because... we are the Crossbone's Detectives, and that's just how we do things.

Also includes "Scramble Fish" oneshot.

Marth is prince of Altea and a direct descendant of Anri, the warrior who slew the shadow dragon Medeus. However, after an attack from the neighbouring kingdom of Dolua, Marth is forced to become an exile in the neighboring nation of Talis. His sister Ellis is taken hostage after his father is killed battling the evil priest Garnef. With the help of the Altean knight Jeigan, the Talisian Princess Shiida, and others, Marth embarks on a quest to find the sacred sword known as Falchion and the Fire Emblem that will allow him to wield it. Only then will he be able to confront Garnef and the resurrected Medeus, win the kingdom of Altea back, and rescue his sister.

from Wikipedia