Issei fought against Trihexa by stealing it away with his remaining strength. That action alone interest a certain being. After seeing the ORC cheating on him in 2 months coma was given the Dragon Fall and was sent in to Cryogenic Freezing for recovery until he was kidnapped by the moon cell who made Issei its next 999 Master candidate.

Issei was turned into a Devil by Rias but after seeing him wroth one pawn she trade him for a new pawn piece. He was put to suffer the cruelty of his new King but one day they were killed by Issei fellow pawn who became a stray devil and told Issei to live. Issei came to an unknown country where he made contact trying to rise up the rank to be free and maybe make friends by have a Peerage with such an Innocent wish he Summoned them.

Issei Hyoudou is betrayed by his Lovers, Partner, Family, Friends, and the Factions separated Ddraig away from Issei who is also a girl and leaving Issei alone with just the powers of Great Red as for Ophis she took her power back. They transported him towards a burning city named Fuyuki City and saved by a kind old man named Shirou Emiya...

The path of a mage is hard but not impossible for one person let's us see his journey into a War and the Factions

A story we're Issei is abandoned by the Factions and we're he and his Queen travel the world together. Rizevim is back with the assistance of a Demon God Pillar that is strengthening by the Mana of this new world. Meanwhile in Chaldea they have saved the world from annihilation but a New singularity was created in a new world so Chaldea Security Organization sent there Master Ritsuka Fujimaru was sent with her servants to save the world from the Demon God Pillar but meet a certain abandon Ex Hero Issei Hyoudou who join them to save his world. Season 1

Issei Hyoudou a true hero who saved his world from the Beast of Apocalypse. One day he didn't went to the party to celebrate their victory against chaos brigade, and The beast of apocalypse because today was the day was win his grandfather died. He said his grandfather was a respectful man, who said to the young Issei "Does it frustrated you kid. Does it Upset you to be the weakest one? That's good, hold on to that feeling. It's proof that feeling means you are not yet ready to give up on yourself." Those words hit very deeply in Issei he didn't remember them until now when those memories flowed back to him when his grandpa spoke to him. After finishing giving the respects to the grandpa. Issei decided to go to the party but what he saw, broke his heart and made the leaders angry and sad for him reason why? It's because the Gremory group, including Kuroka, Le Fay, Yasaka were flirting and kissing random men. Everyone was thinking of punishing them, but Issei didn't want to instead he said " They got a swear that they don't regret the decision" so that day changed Issei who started to pursue his passion with sword including saving someone who became someone precious to him, and ones he loves named Ingvild Leviathan, Laita Astaroth, Elmenhile Karnstein Ophis. After finishing college, making his parents proud he decided to help the factions (Not known three of the most beautiful women of the factions were in love with him since he also save them). Reason why he was helping the factions was because he needed the money for a surprise for his beloved that being a Ring! But sadly things don't go as they planned because one day Azazel started a machine that would travel dimensions an accidental he sucked. What happens to our beloved hero? Why is the summoning heroes from the past? And how come he can't use all the power of the booster gear? And will he use his sword skills? And why is he together with a girl saving humanity?

Issei luchó contra Raiser en la dimensión de bolsillo lo mejor que pudo. Casi lo derrotó! Sólo le faltaba el último golpe! Lamentablemente, la suerte no estaba de su lado. La dimensión de bolsillo colapsó antes de que Issei consiguiese la victoria, y lamentablemente... No fue salvado a tiempo. Gracias a poder volar y su regeneración, Raiser escapó a salvo de la destrucción de la dimensión de bolsillo. Por otro lado, Issei cayó al vacío entre las dimensiones. Sin embargo, gracias a Draig, él encontrará un nuevo lugar donde vivir. Lamentablemente, ese nuevo lugar también se encuentra en riesgo. Que ocurrirá ahora que Issei ah llegado a Chaldea? Podrá salvar a la humanidad? O perecerá ante los enemigos en éste nuevo mundo desconocido? Pero, lo más importante... Cuantas waifus conseguirá invocar nuestro dragón favorito?

Primero que todo esta es mi primera historia así que no esperen la mejor historia del mundo porque no lo va a ser aclarado esto.. a y renuncio a derechos de autor High School DxD y las series Fate no son mías . . . . . . . Issei Hyōdō un pequeño niño que estaba en frente de un viejo , un viejo que le estaba contando historias de héroes. Héroes que marcaron la historia haciendo hazañas increíbles Issei: señor usted cree que pueda ser como ellos? -pregunto el pequeño issei con una cara esperanzada- Viejo: claro mocoso -dijo con una sonrisa- . . Esta es la historia de un héroe. . . Un héroe carmesí

What does happen, when you are abandoned by your only helping hand? It would break anyone right. It does, for an unfortunate individual. That went by the name Issei Hyoudou. He was suddenly called, only to give a frightening news that he is no longer part of the Occult Research Club. Soon, days turn to a week and rumors started to spread about the Red Dragon Emperor. Uncanny and Horrifying rumors about them. Eventually he is tragically killed before he disappears from existence. Into an unknown world. Highschool DXD belongs to Ichiei Ishibumi. Fate: Grand Order belongs to Kinoko Nasu

Zelretch being bored of always tossing multiple Shirous in different timelines or dimensions decided to switch to another person to "help" and it just so happens that he apparently, not coincidentally found a perfect test subject to "help". Follow Issei Hyoudou's life as he adjusts to a secret society with devils, angels, Gods and other different mythological beings while having a weapon which can say "F you" to a God and at the same time a Master of multiple servants as his "harem"....or not? Note: First story I ever wrote in my life so I appreciate other authors or readers' insights and opinions on my story....Please less flames and more flowers please...And I usually right what is on my mind and also write for fun but still research important things like servant backgrounds, pasts, etc. Disclaimer: I do not own Highschool Dxd or FGO. Highschool Dxd is rightfully owned by Ichiei Ishibumi while FGO is owned by Delightworks (2015-2021) and Lasengle(2021-present) and Type-Moon. other works are owned by their respective companies and creators.