To forge the ultimate peace pact among five races, you must master the survival guide on the perilous front lines of the Abyss. Utilize roguelike deck-building and tactical grid combat to withstand the fierce attacks—and irresistible temptations—of diverse battle maidens for 30 days! [Card building] Players can freely recruit companions in the game to form a team and challenge the game's bosses [Skill Combination] Players can equip weapons, armor, accessories, etc. for their recruited companions. Different equipment comes with different skills, allowing players to create a unique hero [Free exploration] After entering the game, players can freely explore the game map, and as long as their strength is sufficient, they can reach any place [Multiple Endings] Each action taken by the player will increase the number of days saved, and the game will end with different outcomes depending on the number of days