Issei Hyoudou: pervert, older brother, pawn to the Gremory family heiress, future Harem King, and...King of the Universe? I'm pretty sure that one is a mistake. The young devil had life going pretty well for him, but, his life and his entire family and friend's lives were all changed, whether for better or worse, with the appearance of a pink haired alien in his bathtub.

Me mintieron, me utilizaron... me engañaron, borraron mis recuerdos. Algo cruel y malvado... pero la verdad, no quiero enojarme y cambiar mi vida por eso... no quiero venganza, solo quiero vivir en paz. Después de que su dulce y cálida luz esmeralda desapareciera en mis brazos... se marcaría mi destino. Mi nombre es Hyoudou Issei... y tendré que seguir mi camino solo... o eso creía

On a fated day, Goku chose not to fulfill a promise he had no grasp of making or what it meant. Since then, a powerful bond begins to be made aware to himself and his childhood friend, Bulma. With an uncertain future opened before them, what will become of their friends, enemies and those surrounding them? Find out, in Heart of the Adventurers!

In an alternate universe from Red Dragon's Power. What if Raynare never kills Issei and he doesn't automatically become a devil. Once again Issei gets his powers early, but the story isn't exactly the same for our slightly perverted hero. Humor, Romance, and Action Ensues in Red Dragon's Power: BOOSTED!

After the death of his parents, Issei is adopted by a special woman and also recruited into the ranks of Heaven. Follow him as he joins the supernatural and begins to change the world for the better. Issei x Gabriel, AU where Issei doesn't have the Boosted Gear. Rated T for Teen (minor themes, more fluff and all, maybe some comedy.) Also, OC allies.

Originally was titled, 'Dragons and Heroes: Legacy'. When the strongest hero alive gets thrown into the world with supernatural entities, his son got caught in it and gained lively companions. Would it be possible for his son to inherit his power as well? As the hero started another quest to find out the origin of his power. WARNING: OOC! Possible AU in later arcs.