| The Holy Grail of Eris | |
| Ja Kanji: | エリスの聖杯 |
| Ja Romaji: | Erisu no Seihai |
| Type: | novel series |
| Author: | Kujira Tokiwa |
| Publisher: | Shōsetsuka ni Narō |
| First: | October 16, 2017 |
| Type: | light novel |
| Author: | Kujira Tokiwa |
| Illustrator: | Yuunagi |
| Demographic: | Male |
| First: | November 14, 2019 |
| Last: | November 7, 2024 |
| Volumes: | 4 (original) 5 (new edition) |
| Type: | manga |
| Author: | Kujira Tokiwa |
| Illustrator: | Hinase Momoyama |
| Publisher: | Square Enix |
| Demographic: | Shōjo |
| Magazine: | Manga Up! |
| Imprint: | Gangan Comics UP! |
| First: | November 3, 2019 |
| Volumes: | 11 |
| Type: | manga |
| Eris no Seihai S | |
| Author: | Kujira Tokiwa |
| Illustrator: | S.Kosugi |
| Publisher: | Drecom Media |
| Demographic: | Shōjo |
| Magazine: | DRE Comics |
| First: | November 1, 2024 |
| Type: | anime |
is a Japanese light novel series written by Kujira Tokiwa and illustrated by Yuunagi. It began serialization online in October 2017 on the user-generated novel publishing website Shōsetsuka ni Narō. It was later acquired by SB Creative, who have published four volumes from November 2019 to March 2022 under their GA Novel imprint. A manga adaptation with art by Hinase Momoyama has been serialized online via Square Enix's Manga Up! website since November 2019 and been collected in eleven tankōbon volumes. A new edition of the light novel series by the same author and illustrator was published by Drecom Media in November 2024 under their DRE Novels imprint. An anime adaptation has been announced.
Written by Kujira Tokiwa, The Holy Grail of Eris began serialization online on the user-generated novel publishing website Shōsetsuka ni Narō on October 16, 2017.[1] It was later acquired by SB Creative who published four volumes with illustrations by Yuunagi under their GA Novel imprint from November 14, 2019 to March 12, 2022. The GA Novel volumes are licensed in North America by Yen Press.[2]
A new edition published under Drecom Media's DRE Novels light novel imprint was published with five volumes releasing on November 7, 2024.[3]
A manga adaptation illustrated by Hinase Momoyama began serialization on Square Enix's Manga Up! manga website and app on November 3, 2019.[4] The manga's chapters have been collected into eleven tankōbon volumes as of November 2024. The manga adaptation is also licensed in North America by Yen Press.
A sequel manga illustrated by S.Kosugi, titled Eris no Seihai S, published its "0th" chapter on Drecom Media's DRE Comics website on October 18, 2024. It later began serialization on November 1, 2024.[5]
An anime adaptation was announced on October 20, 2024.[6]