Love History Caused By Willful Negligence - Chapter 25Vol. 1 :

Side story of Kyoukai Senjou no Horizon bundled with the first press release of the 1st, 3rd, 5th and 7th Blu-ray volumes of both seasons of anime.

This side story follows Asama, Kimi and Mitotsudaira aboard Musashi one year before the beginning of the main story, as Asama is considering to create a music band together with her two friends for the next festival in Aki, a territory under the governance of K.P.A. Italia.

The mysterious force known as the Essence Record finally descended upon Earth, tearing the world asunder and reshaping it through chaos and evolution.Cities turned to ruins. Animals mutated. Some humans lost their minds, others became monsters. Only a few survived the Awakening… and were granted the right to evolve.A new world was born, where the old rules meant nothing. The only law that remained was survival—where hesitation equals death.Adam, an ordinary college student, finds himself alone, far from home, in a world no longer built for the weak. His only goal: to find his family—if they’re still alive in this broken world.No god, beast, demon, man or zombie shall stop him. As long as he draws breath, he won’t stop.

Ronnie, a college student with a boring life has everything around him change when his whole world is turned upside down by a woman he accidentally summons while trying to summon a magical familiar as a game.His peaceful and tranquil days are disrupted as he tries to help her fit into human society while also searching for a way to break their bond.Hell further breaks loose when he discovers that his familiar is indeed the demon queen and mysterious forces start trying to eliminate him for reasons unknown.He struggles to protect himself, adjusting to having a demon queen in his life, and understanding his growing feelings for her.