Mysterious anomalies are appearing in the modern world. You are an ordinary young man who accidentally obtains a magical card that opens the gateway to another world, beginning a journey across time and space. In a realm filled with magic and peril, you’ll meet four heroines, each with distinct personalities. Together, you’ll uncover the truth behind the looming catastrophe— and ultimately decide who will spend the rest of their life by your side. This is a fantasy isekai adventure where romance, strategy, and poker mechanics collide. Can you become a true Big dick?