"Elena runs her late parents’ convenience store alone, crushed under crippling high‑interest loans and on the verge of losing her only home. In her darkest hour, a void portal rips open inside the store’s abandoned storage room, bringing Gabriel, the God of War from the divine realm. His world is under brutal siege by demon hordes. Poisoned demonic magic has tainted all water and food, leaving divine soldiers wounded, starved, and on the brink of total collapse. Starving, Gabriel snatches bread from Elena’s shop and leaves behind an ancient, totem‑carved pure‑gold divine coin as payment before vanishing. When Elena pawns the coin, she learns it is a priceless relic lost for millennia. The windfall temporarily eases her debt nightmare. It soon turns out mortal‑world bread and mineral water can neutralize dark magic and heal injured divine warriors. Convinced Elena is the savior of his realm, Gabriel keeps crossing the portal to buy massive supplies of food from her, rewarding her with rare divine gold coins and the legendary Star‑Sea Heart gem. Caught between violent loan sharks pressing her on Earth and Gabriel fighting bloody battles against endless demons in the god‑realm, Elena and Gabriel build a bond forged through cross‑realm trades. This is a tale of mutual salvation spanning the mortal world and the divine realm."