doubles/twins OK but i take some of these kinda seriously Im Sorry. click the names for links to wiki!
characters~
❶
nathy 4Life 
matsuda touta, mizi
❷ nathesque
kayano mikoto, toritsuka reita, hinomori shizuku, kokonose haruka, kousuke seto, mail jeevas
❸we're similar
seta kaoru, kashiki yuno, rockstar cookie, hanazawa teruki, lemres, tazuna joe, shiraishi an