My Gemini - Yuu Morikawa

Plain, red-headed, and freckled John has nothing going for him, except his two friends who are incredibly popular at school--twins Jekyll and Hyde. The twins, indistinguishable from each other, have always enjoyed taking each other's places for fun. But when the pair is fragmented by an untimely death, it's up to John to find out...which twin is left? Plain, redheaded, and freckled John has nothing going for him, except there's one thing he's proud of--he's best friends with the two popular and mischievous twins Jekyll and Hyde. Jekyll (the calm and collected older brother) and Hyde (the cheerful younger brother) love switching places, and John is the only one who can tell them apart. But when the pair is fragmented by an untimely death, one twin is left alone without his other self by his side. The only question is--is he Jekyll, or is he Hyde?