The King Among the Dragons: King Crimson User Male Reader x DXD Harem

When one thinks of a Sacred Gear, their mind immediately gravitates towards the legendary White and Red Dragon Emperor's, with their power making the mightiest of angels', devils, or fallen angels' quake in their boots. Alongside those two infamous and dangerous Sacred Gear's existed plenty of others, each with their own unique ability. Yet, there existed one that defied all others. This sacred gear was notable in that it passed between the three factions and humans on numerous occasions, always picking up new information and battle techniques as it went from user to user. This "sacred gear" was called King Crimson, and its set of abilities eclipsed every other sacred gear and was almost equal to the Great Red and White. Yet, due to its supreme power and potential danger, if it fell into the wrong hands, it was decided upon by all three factions that King Crimson be locked away within a dimensional gap. Not even its newly forged "Heartbeat" ability could break through its dimensional confine. And so, it remained, forgotten and chained within a prison between the living and the dead, trapped within purgatory, until one day, it found its next wielder, a lost and recently departed soul named Y,N Hyoudou. Seizing its opportunity, King Crimson presented himself to the poor soul, with King Crimson immediately electing the boy to be his next wielder. Soon after the bonding process was complete, an unresolved party revived the boy, and he continued his life as usual, just with a brand-new ally and guardian walking alongside him. Flash-forward several years, and the duo of Y,N, and King Crimson find themselves in Kuoh Academy, a formerly all-girls school that recently shifted into a co-ed one. Little does Y,N, or his sacred gear know that going to this school will present many challenges, dangerous battles, and surprises while gaining the affection of plenty of voluptuous females. Issei proclaimed he was gonna be the harem king? Well, he didn't get the memo for this story!