Moto Saikyou Kouryakusha, Nozomanu Dungeon Haishin de Musou shite Shimasu is a Manga/Manhwa/Manhua in english language, Manga series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The dawn of dungeon conquering. A group of boys who were once known as the strongest party is wiped out in an accident. Five years have passed since then. Low-difficulty dungeons have been developed as leisure facilities, and dungeon conquering has become a popular content that video streamers have flocked to join. In order to survive the tough world of showbiz, current top idol Shinonome Kanami also decides to become a broadcaster who seriously conquers dungeons. The man introduced by her sponsor as the best mentor is a rather unreliable-looking man, Amano Fuyuki. However, when they visit a dungeon together, an incident occurs right away, putting them in a desperate situation –!?