extra ? villain ? mc ? final boss? no a supporting chracterter

Eren starlight an oridenry highschooler like any of us a dumb verigin with no hope of getting a girl a mid family a mid life a mid grades nothy spacial expect hexis delusional he daily prayed to God to get isakaied into a novel it another world. one day god decided to answer his prayer and isakaied him then Eren starlight get isakaied not as mc not as villain or final boss or an extra but as support character. exactly the mc best friend usually it will be good but expect on the novel he got isakaied too it was that this character suffered a lot and by a lot I mean a lot and Eren had no golden finger only a curse called return. when hecdues he returns by time 24 h but to use he have to die. ! follow Eren in his journey as suffer learn and work hard and due a lot. change and miss his family and home and world and feel out of place and realize that this isn't fiction he wished god to be in this is real world that he trapped himself in willingly expect in this world magic is real and demons and other races war and gates. which means hell he put himself on hell he prayed to God to but him in hell