Based on the Gatcha auto battler video game. Focuses on recounting the past of other characters and intermediate stories that occur during the main story which are also canonical. Not the main character, and not the last boss. The one who lurks in the shadows of the storyline and holds all the power, hiding his true abilities by acting like a side character. The boy who longs to be a 'Shadowbroker' lives an unobtrusive life as a side character, training to gain magic power until he's killed in an accident and reincarnated into another world. Reborn as Cid Kagenou, the boy decides to enjoy himself in this other world with a made-up scenario about "the Eminence in Shadow." He starts fooling around with secret maneuvers against an evil cult that he born from his imagination... and it turns out that the cult really does exist! The girls he took on as his subordinates on a whim began worshiping Cid as Shadow, and before he knows it, Cid has become a true "Eminence in Shadow." Before long, Cid—along with his mysterious group the Shadow Garden—will destroy the darkness of his new world. The Strongest MC x Overwhelming Chuunibyou x A Serious Comedy Full of Misunderstandings!
Pest ga Aketara Asobimashou! ~Chuusei Europa Sekai to Gendai Bunmei Slow Life~ / ペストが明けたら遊びましょう!~中世ヨーロッパ世界と現代文明スローライフ~ In 14th Century Middle Age Europe, the spread of the Black Plague has led baker Rachel Becker to move from the city to a village. There, she meets Ema Müller, a "witch" who claims to come from "another world" 700 years into the future, bringing with her modern technology that feels like "magic" to the people of the middle ages...
皇子的天降未婚妻 / 황태자 약혼녀로 살아남기 / La fiancée tombée du Ciel / ใครจะกล้าฝืนบัญชาว่าที่รัชทายาท / Tunangan Putra Mahkota On her way back home late one night, office worker Sophie stumbles into another world where she's a princess?! Well that's what Alan, prince of the Lapis Kingdom, says. To return to her world she must fulfill the prophecy and help Alan become king. Sophie agrees but...amidst a war for the crown, can she survive? (Source: Tapas)
俺に都合が良すぎる街~支配者スキルで異世界ハーレム無双~ The story centers on the reincarnated protagonist, Sakuta Doumyouji, in an "Erotic x Brain Battle" series. The town where Sakuta lives is said to be ruled by three powerful women, but the true ruler is actually Sakuta, who possesses Cheat Skills. The series depicts Sakuta as he operates secretly as the shadow ruler of this Isekai.
Tensei Kaku Gamer: Ouji demo Kateru Isekai Kouryaku / 転生格ゲーマー ~オジでも勝てる異世界攻略~ / Reincarnated as a Fighting Game Character: Even an Old Man Can Win in Another World's Strategy Kairu Mitsushima, a middle-aged fighting game player who had his life changed after meeting the "living legend" of the fighting game world, Daigo Umehara, is reincarnated into another world after a traffic accident... This world turns out to be a brutal place where battles are fought using fighting game knowledge and techniques...!?
魔法が使えないモブキャラに転生したけど、俺だけ使える【最強剣技】で成り上がる~推しの悪役令嬢の兄となった男は破滅フラグを叩き斬り、ゲーム世界で無双する~ / Mahou ga Tsukaenai Mob Character ni Tenseishita kedo, Ore dake Tsukaeru "Saikyou Kengi" de Nariagaru ~Oshi no Akuyaku Reijou no Ani to Natta Otoko wa Hametsu Flag o Tatakikiri, Game Sekai de Musousuru~ Soldo, a young boy, is reincarnated as a countryside noble in the world of a magic game. He is excited about the adventures he will be having in the game world he has played countless times in his previous life, but he is confronted with the shocking truth that he has no talent for magic...! Unable to use magic, Soldo is destined to live as a worthless mob character with no impact on the story, but one day he discovers a book about "secret swordsmanship" hidden within the game! He soon learns of the flags that will lead to his ruin, but he will slash them away with his strongest swordsmanship!
Despite having aspirations of becoming a skilled mage within her realm, Valerie's efforts in honing her magical abilities proved futile. An ominous warning from her instructor about a tiger attack prompted her to abandon her dreams and settle for a mundane existence. Unfortunately, matters only worsened for her when she was forced into marriage with Duke Kylus Dwello, and found herself ensnared in a web of intrigue involving the Duke's mysterious lover, Serena, scheming staff members trying to orchestrate a union between them, a prying prince, and the Duke's inappropriate advances. Even though Valerie yearned for the peaceful life of her past, the obstacles obstructing her path seemed too daunting to overcome.
I quit working at the cafe where I worked for 5 years so I could study for the civil service exam. But when I came home and woke up, I saw an unfamiliar ceiling? Sung-woo, who has a breastfeeding fetish, fell into a different world where drinking breast milk was natural. And he got a chance to become the owner of a breastfeeding cafe! Shall we start milking now?!
High school student Misumi Makoto is called to a fantasy world by the god Tsukuyomi in order to become a hero. However, powerful others in this world aren't as thrilled to have him there, and they kick him to the edge of the world just as Tsukuyomi declares that he must leave Makoto to find his own way. Now it's up to Makoto to find his own way! (Source: MangaHelpers)
Isekai de Uwamae Hanete Ikiteiku: Saisei Mahoutsukai no Yuru Fuwa Jinzai Haken Seikatsu / 異世界で 上前はねて 生きていく~再生魔法使いのゆるふわ人材派遣生活~(コミック) A company drone who died from overworking was reincarnated as Sawadi, the third son of a merchant in a different world. His cheat skill is restoration magic and support magic. With these cheat skills, he came up with a new business model where he used his restoration magic to cure cheap slaves and made them earn money for him. Although his earnings are steadily increasing, he also has to suffer the consequence of getting his workload also increased... Will Sawadi ever be able to live leisurely without working?