Mofu oneesan no atatame-kata

"I received my life to warm you up, blankets are a god too."
A boy who's really sensitive to cold, MInato, meets a mysterious girl, Kokoro, on his 15th birthday on winter. Kokoro says that she's an artifact spirit that born to warm Minato's heart, and would do anything to make sure he is warm to the core! A very exciting manga with "Warming Action" an older woman!! This age difference flirting comedy is finally here!!