High School DxD/ハイスクールD×D and Undertale Crossovers
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Skeletal Shenanigans by Possession Unknown reviews
Once the monsters and Frisk left the Underground, after the events of the pacifist route they find themselves in Japan next to the small town of Kouh. The group decided they wanted to set up residence in Kouh, Now all they needed to do was greet the locals, Frisk being their ambassador... Turns out they seemed a bit monstrous themselves, well at least some of them.
Rated: M - English - Supernatural/Friendship - Chapters: 1 - Words: 2,325 - Reviews: 1 - Favs: 5 - Follows: 8 - Published: 9/23 - Rias G., Frisk, Sans, Papyrus
Brave Devil Fist by Son of Nightmare reviews
Before crashing the wedding, Issei has been having dreams of another life. A life of talking skeletons and fighting monsters. He now wishes to regain his memories and help those that truly need a true king, Ravel and others. His SOUL is filled with BRAVERY. (Evil Rias and Dusttale Sans) Martial Artist Issei! Issei x Ravel x Riser's Peerage Harem
Rated: M - English - Adventure/Romance - Chapters: 14 - Words: 28,507 - Reviews: 21 - Favs: 145 - Follows: 175 - Updated: 6/21 - Published: 5/7/2021 - [H. Issei, Ravel P.] Yubelluna, Orange Soul
UnderDxDTale by Jack In Heaven reviews
(Crossover con Undertale) (Male Frisk). Después de Lograr salvar a todos Y crecer juntos, Frisk disfruta de una vida tranquila hasta el momento que lo manda lejos de todo lo que conoce. Ahora lejos en un lugar que apenas conoce, esta seguro de algo... Esta lleno de Determinación. Una que hara cambiar el mundo.
Rated: M - Spanish - Adventure/Romance - Chapters: 5 - Words: 26,118 - Reviews: 40 - Favs: 49 - Follows: 52 - Updated: 10/10/2022 - Published: 3/13/2017 - Frisk
La Historia Del Protector Multidimensional Y La Princesa Carmeci by Renjicorrupt09
Hola a todos soy epic-sans y soy un escritor el cual renji:Hey sans ya terminaste la- en eso estoy tomate! ejem bueno solo dire que Disfruten el contenido
Rated: M - Spanish - Adventure/Supernatural - Chapters: 2 - Words: 2,591 - Favs: 1 - Follows: 1 - Published: 5/21/2022 - [OC, H. Akeno, Rias G., Chara]
Littlesekiryuutei Remake by ELDRAGONCOLORADO16 reviews
¿Que pasaría si después de ser adoptado por uno de los científicos mas importantes del subsuelo que inicia a estudiar en la academia de Kuoh te conviertes en un aliado de una de las familias de demonios mas importante? ¡Y no solo eso sino que también posees un potencial de poder y una Determinación enorme! Pues eso es lo que sucede con Issei, historia dada por "Morde The Cat"
Rated: M - Spanish - Humor/Adventure - Chapters: 3 - Words: 21,174 - Reviews: 5 - Favs: 13 - Follows: 15 - Updated: 5/2/2020 - Published: 1/9/2020
DevilTale by SouruTV
Frisk adventure as a King has just begun. .(I don't own the cover image and the rights of the image and Undertale/Highschool DXD is of their respective owners)(Up for adoption)
Rated: T - English - Adventure/Romance - Chapters: 1 - Words: 389 - Favs: 10 - Follows: 5 - Published: 10/13/2019 - [Frisk, Sans, Chara]
Wings of an Angel and a Demon by allen Vth reviews
After countless resets, Frisk has finally done it, they gave Asriel a soul, for a price. That's fine for them, because now they can move to the surface as the Ambassador for monsterkind. However, Frisk will not only have to build peace between humans and monsters, but will also have to worry about the attention they gathered from the supernatural world. (Ch. 6; Words: 3992)
Rated: T - English - Supernatural/Hurt/Comfort - Chapters: 5 - Words: 40,798 - Reviews: 38 - Favs: 163 - Follows: 180 - Updated: 1/8/2018 - Published: 1/12/2017 - [Frisk, Asriel] OC, Chara
UnderSchool by Ordinarycomet3 reviews
Several years have passed since the world was saved and the underground was freed. Now a 15 year old Frisk faces an even greater challenge: Highschool. And Devils, Angels and Fallen angels, but mainly school, since those aren't that bad. (Male Frisk, M rated since DxD and terrible puns)
Rated: M - English - Humor/Fantasy - Chapters: 4 - Words: 17,341 - Reviews: 292 - Favs: 544 - Follows: 636 - Updated: 3/22/2017 - Published: 3/19/2016 - Rias G., Frisk, Papyrus, Sans
Under DxD by Doctor Corvus reviews
Summary: You know I thought dying wound be easy just close my eyes and go, but this is what I didn't expect was to be reborn as Asriel Dreemurr in High School DxD of all places and as Issei Hyoudou new 'son', sometimes I really wish fate would stop screwing me, OC-Insert/Asriel, 'Fatherly!Issei slight OOC!Issei, Elements from JoJo' Bizarre Adventures, Pokemon, Digimon
Rated: T - English - Family - Chapters: 1 - Words: 1,258 - Reviews: 2 - Favs: 20 - Follows: 24 - Published: 12/25/2016 - H. Issei, OC, Asriel
UnderBael Challenge by FluffySheepLion reviews
Chara is the heir to the Bael clan. Full details inside.
Rated: T - English - Humor/Family - Chapters: 1 - Words: 403 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 10/25/2016
A Monster Isn't Always a monster by Gronzen reviews
They were free, a whole new world open to them after the barrier broke. The humans never noticed of course, but what will they do when other supernatural forces take notice of the Monsters and their Angel?
Rated: M - English - Chapters: 3 - Words: 8,922 - Reviews: 52 - Favs: 178 - Follows: 201 - Updated: 10/1/2016 - Published: 3/10/2016
Rias vs Sans by mrdrslender reviews
Who will win in a death battle. Find out who, as I show the result based on their skills.
Rated: K+ - English - Suspense - Chapters: 1 - Words: 603 - Reviews: 14 - Favs: 4 - Follows: 2 - Published: 6/8/2016 - Rias G., Sans - Complete