Adopted by a Family of Assassins

Yuki Mitsumu is 20 years old college student from Philippines his major is Business Management and his a half Filipino and half Japanese, his a big fan of anime and his most favorite anime is Hunter x Hunter, One day while his walking home from school he got hit by Truck-Kun in the middle of the road and when he woke up he got reincarnated and what's more he woke up as an orphan and after Five years he got adopted by the Nyx Family. The Nyx Family is famous for being the second strongest family in the whole Cepheus Empire after the Imperial Family and what's scares him the most when he found out that it's a family of Assassins "what are they planning to do with a five year old like me? and why did they adopt me in the first place if the Nyx Family has 5 sons and all of them are well trained assassins and famous for their own talent." This is when the Adventure begins!!!.