Naughty but not vulgar, we can say these are glitter & glamours ++ ! (PS: All the girls are +18!)
Size guide for beginners: Example: 1/4 = if you multiply the figure's size by 4, you get the character's "real-life" size. A person who is 1.60m tall in 1/4 scale is 40cm, 20cm in 1/8 scale... Bandai generally never goes below 1/7 scale, so when you see 1/4 or 1/3 scale, be careful, it's huge!