Michio resolve experimentar um novo jogo online. Ele acha o jogo realista demais, mas logo começa a pegar o jeito e encara um grupo de ladrões que ataca a vila. No entanto, o realismo excessivo e a impossibilidade de sair do jogo logo começam a preocupá-lo...

Michio recebeu uma oferta para comprar Roxanne, mas o prazo é curto e ele não tem dinheiro o suficiente. Agora ele precisa analisar suas opções para ganhar a vultosa quantia enquanto ainda pode comprar a escrava.

O prazo limite para comprar Roxanne se aproxima e Michio, preocupado, procura formas mais eficientes, porém arriscadas, de conseguir o dinheiro necessário.

Michio finalmente conseguiu comprar Roxanne. Agora eles resolvem sair para fazer compras enquanto ele espera ansiosamente sua noite no novo quarto, com cama de casal, na hospedaria.

Após passar a noite com Roxanne, Michio resolve partir com ela para o labirinto. As habilidades e conhecimentos de Roxanne se mostram muito valiosos para Michio.

Michio decide encarar o chefe do primeiro andar do labirinto. Com isso, ele descobre uma nova classe em Roxanne, e decide adquiri-la também. Mas, de volta à cidade, algo perigoso os aguarda.

Michio e Roxanne se juntam para defender a mansão de Alan. Michio aproveita a oportunidade para começar a desenvolver suas habilidades de magia e adquirir uma nova classe.

Michio's party arrives in the town of Quratar located near the Imperial City famous for its large labyrinth. Due to its location, many Explorers live in the town, and it seems like a good base of operations for future adventuring. If they could just find a quiet reasonably-priced detached home... Then Michio could enjoy his life with Roxanne even more!

Michio moves his home base to Quratar and begins his new life. Having completed their preliminary inspection of the labyrinth, Michio and Roxanne decide to make a farm at the house so they can grow herbs. The two of them spend an entire day completing the work, and by the end of it, both of them are covered in dirt. Michio goes out shopping for a washtub so Roxanne can wash their clothes, and a conversation with the shopkeeper inspires Michio to create the bathroom of his dreams.

Exploring labyrinths, making money by gathering items, coming up with efficient combat strategies, and preparing delicious meals using meat dropped by monsters. Michio has established a daily routine in this isekai. Everything has gone smoothly for him until now, but an encounter with a young man in a labyrinth forces him to face the harsh reality of this world.

Michio acquires a rare item that allows one to add skills to equipment. However, it can only be done by dwarves with the Blacksmith job. Michio visits Alan to acquire more party members, where he meets the dwarf girl Sherry. Just when it seems like things are going his way, Sherry has something to say...

Shortly after buying Sherry, Michio realizes that certain races have specific classes, and decides to find out which class is exclusive to humans. Sherry and Roxanne know exactly what it is...

Harem in the Labyrinth of Another World First OVA

Harem in the Labyrinth of Another World Second OVA