well johnny's isn't one boy band, it's any talent in the agency.
"boy's band company" last i checked johnny's was an idol agency lol. nishi is nishikido ryo btw, a former johnny's talent.
it's funny because my first thought was "haha he kinda looks like kotaki nozomu"
thought i would never read mangas mentioning johnny's again, then i come across this mention of SMAP