Cold Heart Soldier

Mato The Demon Capital, a dimension that is the same size as Kyoto, where several dangerous creatures called Shuuki inhabit. Both the Human world and Mato are connected through portals called Gates which appear throughout Japan, They cause cases called Mato Disasters where people are pulled into Mato or Shuuki pass through them to attack humans

However, it was the same place where the Peaches were discovered, which would only endow women with special power to combat the Shuuki leading to both the creation of the Demon Defense Force and women becoming superior to men, leading to a matriarchal society

One Day a 12-years-old boy found himself pulled into Mato, remembering his parent telling him to sit and wait if this happened, so he waited but being a 12-year-old, he easily got hungry, his stomach continued to rumble until a single Peach landed on his lap, realizing it was a Mato Peach, the boy knowing it wouldn't grant him special power decided to eat the Peach to at least stop his stomach from rumbling, but when he ate the Peach a primordial power within him was awaken and the area around him freeze into absolute zero from an explosion afterward the boy fainted and was later rescue by the Demon Defense Force who was all puzzle by the scene without realizing it was caused by the boy