Find Your Way Back Among the Ruins of Another World

"Slow heat + heavy emphasis on girls + multiple heroines + different world + sword and magic + long novel, (this is a story that belongs only to "me")" A reality that cannot be escaped or a dream that cannot be escaped High school student 'Hanyu Hiromasa' wakes up in the ruins of another world. Is this reality or a dream? "I must go back to my sister." Meet each character, each character has a different past and memories with "me". Search for "relics" in various "relics" in this different world's continent, and find a way to return to the real world. You must find it!