If you're looking for manga similar to Dungeon Kurashi no Moto Yuusha, you might like these titles.
Ostracized and attacked by his home village after the death of his mother, the half-human half-demon Elliot establishes himself as a dungeon lord with the help of his father's succubus.
Souhei embarks on a trip in the gigantic labyrinth that suddenly appears in his basement. But it's an extremely special dungeon where the only way to become stronger is to do lewd things with girls and increase Lv (Love)! The story of a young boy who explores and does lewd things with women.
Rick, an alchemist who was banished from the strongest heroes' party, is wandering the wilds alone, when he saves a beautiful woman. It turns out that she is a dungeon spirit! Rick makes a contract with her and becomes the dungeon master. Now he is determined to create a dungeon that will defeat all the heroes!
Dariel is a dark soldier in the Demon King's army in his 30s and unable to use magic who was suddenly dismissed! Kicked out of his hometown, Dariel drifted into a human village where adventurer skills that aren't bestowed onto demons bursted into bloom! "I'm...human...?" Then, a village girl launches a fierce attack to get her hands on and subdue him, a novice adventurer, who fell into her lap?! His second chance at life and he still can't relax has just begun!
As far as adventuring goes, supporting your party is a thankless job-even more so if you're just a lowly red mage like Yuke Feldio. So, when he gets fed up with his A-rank party of total a-holes, he ditches them for some former students-a trio of girls who just looove his company. Thing is, to conquer the world's greatest dungeon and achieve his dream, he'll have to teach these cuties a thing or two…and he may just learn there's more potential within him (and them) then he ever knew.
Hiro Bouchi is a high schooler who was friendless, alone, and always fiercely bullied. But one day, the world undergoes the "dungeonization" process and completely changes! In the middle of the chaos, a new skill awakens in Hiro: "Shop". He soon discovers that it's a unique skill that can be used to purchase anything from food and daily necessities, to completely unrealistic, fantastical items!
At the very north of this four-cornered world lies the impregnable Dungeon of the Dead, so-called because naught but death awaits those who enter within. At least, not until that challenge is met by a certain party of adventurers, six men and women who would one day be called "Heroes"... With this volume, the ashen tale of their youth begins!
In present-day Japan, countless dungeons appeared. Hekoobi Keita, a corporate slave exploited by a black company, goes into Shibuya's dungeon indifferently. but thanks to a rare monster he (coincidentally) defeated, he obtained the cheat skill, Greed! As soon as she saw that ability, a super-rich high school girl named Okoshiyama Sudare offered him a 60-million-yen contract to become her personal explorer...?! Everything's on a whole other level as his life of overwhelming success begins!!!