Stylistically, it appears as good as any other high school slice of life though the face animations suffer slightly in more complex angles and the background is, as with smaller animations, lacking detail. The diegesis of Sanrio Danshi is intentionally small; there is little to explore outside the school, camp, Sanrio Puroland, and the homes of the characters. Despite its dubious origins, Sanrio Danshi is a light hearted, and greatly unrealistic, anime about the possibility of those with uncommon interests finding a collective that fulfills a desire for relatedness.
Hasegawa Kouta is an ordinary high school fellow, but the rest of the Sanrio boys are not: Seiichiro is both archery club and student council president, Mizuno Yuu is the stock popular figure, Shunsuke is the soccer team's star player, and Nishimiya Ryo is the stock androgynous near-loli figure. There's more than enough fanservice in this anime: it'll sell well. However, it is this particular aspect (the unlikely nature of the new friendship of the slightly stock-natured characters) and the unnaturally rapid road to a ridiculously strong bond that makes it more than a little unrealistic. Nevertheless, I found Shunsuke enjoyable to watch: the oddity of his prudent nature often made it near-impossible to suspend disbelief regarding his love for Kitty-san. It is the exercise of willfully suspending disbelief and forcefully assimilating dissonant factors that makes anime like this enjoyable.
