What do you mean by "this is a dating game"?

Seven years of gaming, countless playthroughs. Many call it a tower-climbing game, but only Sieg knows it's actually a romance game. After his departure, the witch grieved, the empress wept, the swordsman was heartbroken, and the demon king sighed. Now, Sieg has arrived like lightning! As a modern man, he lacks the courage to face bloodshed; as a prisoner, he is familiar with all the rules of this world. He plays the role of the "Lord of the Flint Palace and God of Conquest," using the knowledge gained from the game to become an omniscient god worshipped by countless adventurers. "Welcome." Sieg sits behind the round table, looking at the guest before him: "I am the Lord of the Flint Palace and God of Conquest. What trouble have you encountered?" "I'm looking for someone; he's been lost in the Flint Palace for a very long time." Sieg's heart skipped a beat as he looked at the newcomer. She curved her red lips into a smile, looking directly at him: "Can you help me find him, Mr. Sieg?"