BUR #8638 has been approved by @evazion.
rename kawasaki_sakura -> kawasaki_sakura_(idoly_pride)
Found out there is also a girl called Kawasaki Sakura (川崎櫻) in China Railway Girls. I’ve already moved them to kawasaki_sakura_(china_railway_girl) and I decided that kawasaki_sakura should become ambiguous tag.