After the Qilphoth Incident, the Sparda Twins knows the risks and decided go to the Demons' realms to cut off the root end the connection between the Humans and Demons world separates for goods. Leaving their sons as new protectors of humankind. It have been 6 months due to his father enter to Demon Worlds, (Y/N) have been trying to find his father's sword missing pieces Rebellion have been scattered. One day... he meets the unexpected Client hired him for the jobs to find the ancient artifact, have transported to another world. Facing the humanity's greatest threats and fears known as Honkais. (Y/N) have to face them and face his biggest fear is.... Being shy around girls.