My front door leads to a comic strip

In a world where a portal between two realities has been discovered, the protagonist finds themselves with an idle life, capable of only mining gold, reselling handicrafts, and potentially becoming the richest person in both worlds. However, their peaceful existence is disrupted by the sudden appearance of monsters and demons, forcing them to resort to unconventional means to survive. As they navigate this new reality, they adopt a pragmatic approach, utilizing artillery fire to clear their path. But when the option to purchase guns and cannons is unavailable, they turn to more creative solutions, including attempting to buy plane tickets to escape the chaos. As they cautiously venture into a village, they are met with a thrilling and bizarre adventure, one that will test their resolve and ingenuity in the face of the unknown.