Define hidden gems. And what genre you prefer or what you have already read? My favorites at the moment are: Monster Soul Online Crossing to the Future: it's not easy being a man My Death Flags Show No Sign of Ending Colossus Hunter I Came Back, but the World is Still a Fantasy!? My Master Disconnected Yet Again Okami Wa Nemuranai Boukensha ni Naritai to Miyako ni Deteitta Musume ga S Rank ni Natteta How to Live as the Enemy Prince I’m the Evil Lord of an Intergalactic Empire! One Man Army Second Life Ranker Star Rank Hunter Stop, Friendly Fire! Superstars of Tomorrow The Card Apprentice The S-Classes That I Raised
If you're into novels with game elements Summoning the Holy Sword The Rebirth of the thief who roamed the world Reincarnation of the strongest swordgod
Mother of Learning My House of Horrors Lord of the Mysteries The Legendary Mechanic The Zombie Knight Saga