Japanese light novel series
 is a Japanese light novel series written by Ryūta Kijima and illustrated by Sando. It was initially serialized as a web novel published on the user-generated novel publishing site Shōsetsuka ni Narō from July 2018 to February 2021. It was later acquired by Shufunotomo who began releasing it as a light novel under their Hero Bunko imprint in April 2019. A manga adaptation illustrated by Makoto Kisaragi began serialization on Square Enix's "Manga Up!" app in May 2019. An anime television series adaptation produced by Studio Polon aired from January to March 2024.
Voiced by: Jun Kasama 
Rud is the main character of the series and is known for being the strongest tank as his absorb shield has the highest value in history: 9999. After Rud was kicked out of the hero’s party, he returned to his home town Avancia and started exploring Labyrinths to get the labyrinth treasures to cure his little sister Manicia. 
When he and his little sister were younger they were both abandoned by their parents and ever since they have been looking after each other. Rud is shown to have a sister complex and is always shown thinking about Manicia. Rud later learned from Luna that his two unknown skills are Life Conversion and Shield of Sacrifice. He eventually learned to control his mana and used it as a substitute whenever his absorb shield was completely shattered. 
Voiced by: Kaede Hondo 
Nin is the first heroine to be introduced in the series, she is known and revered as the saint. Nin was the only member of the hero’s party who was against Rud’s expulsion and tried to prevent it. Nin is shown to be extremely proficient in healing and elemental magic. She eventually joined Rud later on after the fall of the hero’s party and stayed with him in Avancia. Nin is hinted to have feelings for Rud and flirts with him every now and again.
Voiced by: Kana Ichinose 
Luna was first introduced encountering Rud after she fled the country she was created in. It is revealed that she is a illegally made homunculus and unlike the others, she is able to express herself like a normal human being. Luna was shown to be able to use magic and has the unique skill Judgement, which she used to identify Rud’s unknown skills. Luna has since stayed together with Rud and Manicia in their home, she sometimes is shown making breakfast for them. Luna regularly calls Rud master and is fond of him, it is hinted that she has feelings for him.
Voiced by: Yui Ogura 
Manicia is Rud’s little sister and the entire reason for his existence. She along with her brother were both abandoned by their parents as children and have looked after each other since. It is revealed that she had been inflicted with a illness that forced her to stay indoors, Rud had been looking for the Labyrinth Treasures in the hopes that they could cure her. Manicia also has a unique skill of her own that causes the cowlick on the top of her head to move about and allows her to sense when Rud is nearby. So far, Manicia has used two of the Labyrinth Treasures and healed her illness significantly.
Voiced by: Ayaka Ōhashi
Lilia and her sister were both introduced at the beginning of the series in the hero’s party. Lilia and her sister Lily are twins and are shown to inseparable as they always stick to each other. It is revealed that prior to the series Lilia and Lily ran away from their parents as they were abused by them. Lilia and Lily are shown to have a unique skill that allows them to merge into one being with immense power and strength, but to merge they have to kiss. Lilia and Lily joined Rud in Avancia later on after the fall of the hero’s party and are regularly seen with him. She is hinted to have feelings for Rud and is grateful for his help, after he gave advice to both her and Lily.
Voiced by: Kana Yūki 
Lily is introduced along with her sister Lilia while they were in the hero’s party. Lily has a unique skill “dungeon Walk” which allows her to teleport herself and her party out of a labyrinth, it can also be used to teleport into any floor of a labyrinth. Lily is extremely close with her sister and clings to her every chance she gets. However, she felt inferior to her sister, until Rud gave her advice and she decided to lead the party in one of their dungeon expeditions. Lily like her sister is hinted to have feelings for Rud and was the only girl to kiss Rud, although it was only on the cheek.
Voiced by: Nobuhiko Okamoto
Marius was first introduced inside the first labyrinth that Rud explored after leaving the hero’s party. Marius was defeated by Rud and his party, but to his surprise was spared and befriended by him. Since then, Marius has tagged along with Rud and has helped him with his Labyrinth Raids. He was the first Labyrinth boss to give Rud his Labyrinth treasure and the first demon to befriend Rud.
Voiced by: Misaki Kuno 
Amon was introduced in the second Labyrinth that Rud explored along with his party. She is known as an extremely powerful demon king, who even caused Marius to be frightened by her mere presence. After she was defeated by Rud and his party, she like Marius was spared and befriended by Rud. She gave Rud his second labyrinth treasure and was the second demon to befriend him. Amon is fond of Manicia’s cooking and would do anything to get more of it.
Media.
Light novel.
Written by Ryūta Kijima, "The Strongest Tank's Labyrinth Raids" was initially serialized as a web novel published on the user-generated novel website Shōsetsuka ni Narō from July 13, 2018, to February 10, 2021. It was later acquired by Shufunotomo who began releasing it as a light novel with illustrations by Sando under their Hero Bunko imprint on April 30, 2019. Eight volumes have been released as of September 2024.
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Manga.
A manga adaptation illustrated by Makoto Kisaragi began serialization on Square Enix's "Manga Up!" on May 3, 2019. Twelve "tankōbon" volumes have been released as of October 2024. The manga adaptation is published in North America by Comikey and Square Enix through the global version of "Manga Up!".
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Anime.
An anime television series adaptation was announced on October 5, 2023. The series is produced by Studio Polon and directed by Mitsutaka Noshitani, with Hitomi Amamiya writing series scripts, Taihei Nagai designing the characters, and Mao Yamamoto composing the music. It aired from January 7 to March 24, 2024, on the Animazing!!! programming block on all ANN affiliates, including ABC and TV Asahi. The opening theme song is "Brave", while the ending theme song is , both performed by Ireisu. Crunchyroll has licensed the series. Medialink has licensed the series in South, Southeast Asia and Oceania (except Australia and New Zealand) and streaming it on the Ani-One Asia YouTube channel.
References.
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