A strange group of four students led by Ren gathered on the school's rooftop to test their new invention. When things don't go the way they wanted to, Ren is sent to a fantasy world— one filled with magic and wonder!

There he meets a cute girl who looks almost like him, someone he'd mistake as his twin sister. She presents herself as Rena, a talented mage who proclaims that her own modified hero summoning spell works!

What awaits Ren and his newfound comrades in this new world? The mysteries and adventures never end!

Temp. Cover assets: RPG Maker MV parallax backgrounds, Anime Creator (an attempt was made ;_;)