Isekai de Cheat Skill wo Te ni Shita Ore wa, Genjitsu Sekai wo mo Musou Suru: Level Up wa Jinsei wo Kaeta

Bullied Yuuya discovers a portal to another world where he gains power that transfers back home.

Tenjou Yuuya has endured bullying throughout his entire life until he finds a mysterious door leading to a different realm. This new world contains powerful weapons and dangerous monsters, resembling a fantasy video game. After exploring this environment, Yuuya returns to his original reality. He soon realizes that the progress he made in the other world, specifically his leveling up, has followed him back. This means his increased strength and abilities are now part of his life in the real world, changing his circumstances significantly.

Yuuya transfers to Ousei Academy after Kaori's father offers him a spot.

Yuuya accepts an invitation to Ousei Academy from Kaori’s father, the school chairman, after saving her life. Despite his siblings’ attempts to claim the spot, Kaori exposes their bullying nature, prompting Yuuya to leave with her. The chairman reassures Yuuya that the institution prioritizes character over grades, allowing students to develop skills while enjoying themselves. During a science lesson taught by Ms. Sawada, Yuuya attracts the attention of many female classmates. He gradually forms tentative friendships with Ryō and Shingo, appreciating the genuine kindness he receives, and agrees to transfer. Kaori shows him a nearby shopping center, where she insists they use first names, leading to rumors of a date that embarrass him. Later, Yuuya returns to another world for leisure but rescues a girl named Lexia from a monster before slipping away when her guards arrive.

Yuuya declines modeling contract while Lexia proposes marriage after rescue

Yuuya uses new wealth for clothes and is recruited by photographer Hikaru to replace model Shō. He shoots with Miu, who likes his charm. Shō arrives late, flirts with Miu, and attacks Yuuya, who instinctively defeats him. Cameras capture Shō’s violence, ruining his career online. Yuuya rejects Hikaru’s contract to study but accepts free designer clothes. In another world, Princess Lexia of Arselia returns to a dangerous forest with guards to thank her anonymous hero. Yuuya visits this world and finds Lexia and her guards under attack. He rescues them, and Lexia abruptly asks Yuuya to marry her. Meanwhile, Miu’s boss in Japan tries to hire Yuuya before other agencies do.

Yuuya Introduces Himself and Defeats the Red Ogre Gang at Ousei Academy

Following Lexia's proposal, Yuuya meets her father, the king of Arselia, while Prince Reigar remains angry that an assassination attempt on Lexia failed. Yuuya starts at Ousei Academy, befriends students, and impresses them by saving Kaede Kazama from a soccer ball. The Red Ogre gang, led by his jealous twin siblings, attacks the school to retaliate against Kaori. Despite self-doubt, Yuuya overcomes his fears and defeats the entire gang alone. When police arrive, the Red Ogre leader attempts to kill Youta and Sora for their role in the incident. Yuuya saves his siblings, causing them to feel deep shame for their previous mistreatment of him.

Yūya adopts a Black Fenrir named Night and faces the Headhunter assassin.

During a monster forest expedition, Yūya rescues and adopts a Black Fenrir puppy he names Night. While walking Night in his Earth neighborhood, he gains attention and meets Kaori and Miu. Night proves capable and joins Yūya in combat, where they defeat a Crystal Deer using fire and water magic. The defeated monster drops an item that grants Yūya instant hot baths. Later, the pair discovers a cave containing skeletal remains and a tome titled The Book of the Sage. Concurrently, Reigar's agents hire the notorious assassin Headhunter to eliminate Princess Lexia.

Yuuya Gains Sage’s Magic and Faces Camping Peril and Political Rumors

Yuuya discovers the Sage’s journal, which details the original cottage owner’s refusal of godhood to remain human. The book grants Yuuya magical abilities and instructs him and Night on their use, warning him to cultivate friends who never fear his strength. At Ousei, students embark on a two-day camping trip with Kaede, Akira, and Rin. Kaori and others help Yuuya shop for gear before the girls are separated and trapped by fire, prompting Yuuya to rescue them with magic. Meanwhile, in Arselia, King Arnold learns of Lexia’s marriage proposal to Yuuya and assumes seduction occurred. Additionally, a girl with a dark aura confronts the Divine Rabbit, God of Kicks, declaring her intent to destroy the world.

Yuuya rescues Luna in the forest before returning to Earth for a school camping trip.

While exploring the forest and honing his abilities, Yuuya and Night encounter a girl threatened by goblins. Although Night attempts to prevent Yuuya from intervening, he saves the stranger, who introduces herself as Luna. Luna states she entered the forest for training and, moved by Yuuya’s unprecedented kindness, asks for his help in improving, which he accepts. Later, Yuuya returns to Earth to take a break from their partnership, joining a class trip to mountain land owned by Ousei Academy. The students are confused to learn they must sleep outdoors and forage for food for the weekend. Yuuya again impresses his classmates by catching fish by hand for dinner. Meanwhile, in the other world, Luna is revealed to be Headhunter.

Yuuya and friends face unexpected challenges during their off-campus study trip.

The off-campus study trip proves to be vastly different from what Yuuya and his companions had anticipated. Instead of a standard educational excursion, the group encounters a series of unforeseen difficulties that disrupt their plans. Later in the day, Yuuya arranges a meeting with Lexia and her personal guards. This encounter is intended to secure an escort for him to reach an audience with the king. However, the situation takes a concerning turn when Night begins to exhibit strange and unpredictable behavior, adding tension to the proceedings. The group must navigate these complications while trying to maintain their objectives amidst the growing uncertainty surrounding Night's actions.

Luna reveals her past and joins Yuuya and Lexia as bodyguard.

Lexia questions Luna after discovering her connection to Yuuya, prompting Luna to share her history before joining the Guild of Darkness and her current mission to assassinate the princess. Instead of execution for failure, Luna is welcomed into their friendship, hired as the princess’s bodyguard, and both girls openly declare their feelings for Yuuya. After resting in the hut, Yuuya walks the pair to the forest edge before departing for school. He is then accompanied by a scarlet boar he names Akatsuki. Later, Yuuya participates in a soccer trial for an academy event, distinguishing himself as a goalie. That same afternoon, Miu’s boss locates him at Ousei.

Yuuya trains with the Divine Rabbit and dominates the sports competition while facing Vile threats.

A magazine manager attempts to photograph Yuuya for a sports event after he declines an initial request. During a monster hunt in the Demon's Den, the Divine Rabbit selects Yuuya as his successor to wield the Divine Kick. Learning of the conflict between the benevolent Divines and destructive Viles, Yuuya accepts training to protect his friends. At the sports competition, Yuuya unexpectedly enters every event and wins easily. Kaori kisses his cheek for help during tennis. Later, the Rabbit surprises a Vile opponent with magic taught by Yuuya, prompting her to prioritize eliminating him.

Yuuya and Kaori discover the other world gate while Reigar plots assassination in Arselia.

Yuuya and Kaori spend time preparing for exams, during which she finds the gate to the other world. He reveals his secret, and she agrees to keep it. In Arselia, Lexia introduces Luna to King Arnold, who becomes enraged by the conversion circumstances and Yuuya's alleged indecencies. Reigar decides to accelerate plans to assassinate his father and Lexia to claim the throne. After a holiday, Yuuya visits the palace and meets the king, worsening the king's impression. Reigar's agents attack with a magic-suppressing barrier, but Yuuya defeats them using enhanced abilities. Lexia scolds her father, and evidence of Reigar's involvement is uncovered.

Yuuya Tours the Capital and Faces the Vile Girl After Reigar's Capture

Lexia, Luna, and Owen guide Yuuya through the capital, leading to Luna registering them at the Adventurer's Guild. Yuuya’s exceptional magical test results attract significant attention. During a herb-gathering mission, Reigar’s location is found, and Owen requests Yuuya’s assistance in capturing the fugitive prince. Although Reigar is taken alive, the Vile girl arrives, revealing she manipulated him to start a genocidal war. She attacks the group, but Yuuya uses his magic to deflect her assault. Before retreating, the Vile girl kills Owen. Meanwhile, on Earth, Kaori attempts in vain to visit Yuuya.

Yuuya and Kaori