thanks naghi32 It is :Boku wa Isekai de Fuyo Mahou to Shoukan Mahou wo Tenbin ni Kakeru I don't know much about it had read the text here but somwhow didn't save it in my lists -.-. school boy transfere is an other world with class; he is bullied; now has 2 ways to go, he is there with a classmate. now he must choose a class. Solo only for himself or support for her(?should be female). thats sadly all i remember.
Meh, some time ago i was also looking for it, and your question matched my search terms at that time ^_^
Your description hurt my brain as I tried to comprehend what exactly you were trying to convey. All I got was that the novel is an atypical class transfer into another world with a bullied mc. Your description of "of solo only for himself" is quite redundant as that's exactly what solo means. However I believe you are looking for Boku wa Isekai de Fuyo Mahou to Shoukan Mahou wo Tenbin ni Kakeru as a quick search of the words transported and support only yielded that.