i forgot this shounen manga name, it was about a boy who lived with his mom, his dad disappeared who knows where. i think he was in mid/high school, and he suddenly transported?? to another world. he met a girl there who looked like his female friend in his original world, and apparently whenever this female friend was sleeping, she had dreams as her doppelganger (?) in that world. if im not mistaken, the girl's name was koyuki? and her doppelganger had ice power. i also remember there was a villain that had pumpkin head. the drawing style kinda resembled rave master. thank you!

Seems like Marchen Awakens Romance, it's also adapted to anime.

Be kind or get banned

yes, that's the one! thank you!