Gal to Dungeon to Shuukai Okure no Tansaku Eiyuutan ~Moto Legend Ima wa Wakeari tei Rank Tansakushana Ore ga, S-Kyuu Gal ni Natsukare Makutte Ikusei wo Makase Sareta~

Kaoru Kunou, once a legendary explorer known as the “Dungeon Maniac,” has fallen to the lowest ranks of adventurers for reasons he does not understand. Though disillusioned, he keeps exploring dungeons, unable to let go of the passion he has carried since his youth. During one expedition, he saves Shion, a hugely popular S-class gal streamer, from a deadly crisis. Shion is instantly drawn to his strength and mysterious presence, and boldly expresses her affection for him. Kaoru is initially overwhelmed by Shion’s bright personality and direct attention, but her sincerity gradually helps him confront the scars of his past. The two form a temporary mentor-and-student partnership, with Kaoru teaching Shion about dungeon exploration. Together, they set out to reach the deepest levels of a dungeon tied to both their pasts, where resurfacing secrets and dangerous foes put their bond to the test.