Ore dake Haireru Kakushi Dungeon: Kossori Kitaete Sekai Saikyou, Sekai de Yuiitsu no "Shinkentsukai" nanoni Senryokugai to Yobareta Ore, Kakusei shita "Shinken" to Saikyou ni Naru Recommendations
Both stories involve male leads that were extremely weak until they came across a secret power/awakened their power. They then become very strong through unlocking their new power and grow as an adventurer.
