Moufu Onee-san no Atatamekata

Minato is a fifteen-year-old boy who suffers from an extreme sensitivity to the cold, leaving him constantly shivering through the harsh winter months. His life takes an unexpected turn on his fifteenth birthday when he crosses paths with a mysterious young woman named Kokoro. Far from being an ordinary stranger, she reveals herself to be an artifact spirit—a living embodiment of a blanket—whose sole purpose for existing is to bring warmth to Minato's heart and body. Driven by her divine nature as a spirit born to protect him from the freezing temperatures, Kokoro declares that she will do absolutely anything necessary to ensure he stays warm down to his very core. Her unwavering dedication transforms Minato's bleak, frigid days into something far more vibrant and exciting. What follows is a lively series of events centered around her unique "warming action," blending supernatural devotion with everyday comfort. As Kokoro dotes on him with the affectionate charm of an older woman, their dynamic sparks a delightful age-gap romantic comedy filled with playful flirting and endearing interactions. This thrilling and heartwarming manga delivers a fresh take on supernatural romance, bringing together an unforgettable heroine determined to chase away the winter chill at any cost.