KAKERU

Robou is a corporate drone with an extraordinary passion for giant humanoid robots. One day, he's deeply hurt when a colleague bluntly states, "There's no need for giant humanoid robots." Later that evening, he's approached by a being from another world who pleads with him to "fight using a giant robot." After some hesitation, Robou chooses to reincarnate into this new world. There, he finds himself inhabiting Volcamion—a mighty humanoid mecha revered by the Volcami Empire. Thus begins Robou's second life as a god within a giant robot.

(Source: Hifumi Shobo, translated)

Teikoku Kishin Volcamion

Imperial Machine God Volcamion

帝国機神ヴォルカミオン

Seo, Eunha

Hamdeogi

Da-in, ended up possessing the villain of a story. To make Stardust—the story's protagonist and his favorite character in a dystopian manga—happy, he resolves to become the villain Egoistic for her growth. Da-in deliberately causes terror to enhance Stardust's abilities and preemptively prevents all the tragic events from the original story, but in the process, he gains public support while also drawing Stardust's suspicion. Stardust, who initially opposed him, gradually opens her heart, and soon even begins to show signs of obsession toward him...?

(Source: Kakao Entertainment, translated)

I Became the Villain the Hero Is Obsessed With

히어로가 집착하는 악당이 되었다

Shima

Ameria

"...Wolka?! Noooooo!! Y-you can't die on me!!"

Wolka, an adventurer, is a reincarnator from Japan. During a dungeon exploration, his party is ambushed by a powerful monster, and Wolka suffers fatal injuries while protecting his companions; in his final moments, he finally remembers the world he had reincarnated into was that of a dark fantasy manga he read in his previous life — that he and his companions were minor characters to be annihilated then and there.

But Wolka, empowered by his hatred for bad endings, desperately presses on for the sake of his companions — and defeats the monster. It only cost him an eye and a leg — but in exchange, he and his party escaped their intended fate. What he did not account for, however, was how the experience changed the young girls that were his companions.

"I swear I'll protect you this time!! So please, please, don't abandon me..!"

"I'll always be by your side... You're fine with that, right, senpai?"

"I would give my life for yours... That is what I decided."

This is the murky, otherworldly story of a reincarnated man who values happy endings above all and the girls who harbor intense feelings for him!

(Source: Kadokawa, translated)

Zenmetsu End wo Shi ni Monogurui de Kaihi shita. Party ga Yanda.

全滅エンドを死に物狂いで回避した。パーティが病んだ。

Gouda, Nagi

Sake

Hoshizaki, Leo

An anthology of isekai harem short stories by various mangaka.

Teisou Gyakuten!? Isekai Harem Seikatsu Anthology

貞操逆転!? 異世界ハーレム生活アンソロジー

Nozakura, Saku

Sakurai, Masamune

Satoru, a young man who had been leading a degenerate life after a certain incident, is suddenly transported to another world through a mysterious in-game item! There, a goddess grants him a unique blessing — the "Fully Automatic Attack Skill," a power that defeats monsters without him having to lift a finger!! With this overpowered skill that allows instant level-ups and the goddess’s guidance, Satoru’s once-dulled heart begins to burn with passion once more—! Thus begins the fast-paced tale of a lazy young man and his unstoppable heroines as they conquer a new world together!

(Source: Starts Shuppan, translated)

Auto Skill de Ore dake Chousoku Level Up: Megami ga Michibiku Taida na Tenseisha no Sakutto Isekai Kouryaku

全自動攻撃【オート】スキルで俺だけ超速レベルアップ～女神が導く怠惰な転生者のサクッと異世界攻略～

Kaedehara, Kouta

Tenitatsuji

Akuyaku Kizoku ga Hirakinaotte Hametsu Flag wo "Jitsuryoku" de Tatakiotteitara, Itsunomanika Heroine-tachi kara Eiyuushi sareru You ni Natta Ken

I Broke Dead End Flag and I Became a Hero.

悪役貴族が開き直って破滅フラグを“実力”で叩き折っていたら、いつの間にかヒロイン達から英雄視されるようになった件

Mikoshiro, Honnin

Sasuga, Yuyushita

Zero, a young nobleman reincarnated from Japan, finds himself in a world of swords and magic. As a former otaku, his blood starts boiling—he wants to do something chuunibyou-esque! When he discovers his father's embarrassing "Notebook of the World's Truths" in the study, Zero seizes the chance to roleplay. Declaring himself the Emissary of the Holy God, he begins a grand rebellion against the false gods who rule the world—just for fun. But the gods actually exist!? And the girls he casually recruited as subordinates now worship him with complete devotion! Unable to back down, Zero continues to play the part of the Emissary, unknowingly guiding the world from the shadows!

(Source: Kadokawa, translated)

Kami no Daikousha (Jishou): Subete wa Ano Okata no Oboshimesu Mama ni...... to Iimakuttetara Hiku ni Hikenakunatta

神の代行者（自称） 全てはあのお方の思し召すままに……と言いまくってたら引くに引けなくなった

Yamaguchi, Mikoto

Ogino, Yuhey

Kairu Mitsushima, a middle-aged fighting game player who had his life changed after meeting Daigo Umehara, a "living legend" of the world of fighting games, is reincarnated into another world after a traffic accident...This world turns out to be a heroic world where battles are fought using fighting-game knowledge and techniques...!?

(Source: Shueisha, translated)

Tensei Kaku Gamer: Oji demo Kateru Isekai Kouryaku

Reincarnated Fighting Gamer

転生格ゲーマー ～オジでも勝てる異世界攻略～

Harada, Shigemitsu

Denji Neko Gakudan

Ore to Seijo ga Dekiteru Koto ga Baretara Kono Party wa Houkai suru

俺と聖女がデキてることがバレたらこのパーティーは崩壊する

Kimura, Sakyuu

Ex is ridiculed by his peers as a failure of a hero, whose sacred light has yet to manifest. But it turns out to have manifested in his dick! How is he supposed to defeat anything with that?! Even when his town is attacked, all he can manage to do is have his crotch glow. While bearing the weight of these worries, a mysterious shrine appears before him...

(Source: Kodansha, translated)

Seijun Ecstasy: xx shinai to Derarenai Heya de Mazoku wo Buttaoshimasu

Holy Pilgrimage Ecstasy

聖巡エクスタシー－××しないと出られない部屋で魔族をブッ倒します－

Yoshinaga, Yunosuke

Mahou Kikai Ningen 906

Magical Mechanical Human 906

魔法機械人間906

Akahori, Satoru

Isourou

Ken to Mahou to NTR

Swords, Sorcery, and NTR

剣と魔法とNTR

Isekai H Eiyuuden: Bishoujo Senshi-tachi wa Saikyou Gunshi no Mucha na Onegai ni Sakaraenai

Manga Like Isekai H Eiyuuden: Bishoujo Senshi-tachi wa Saikyou Gunshi no Mucha na Onegai ni Sakaraenai