If you have watched ‘Stein’s gate’ you surely know why Ruka is on this list. He likes to wander around but is pretty smart and keeps his rank at 5 th in his school. Tadashi is in love with Akira and loves her cooking. He is one of the main protagonists of the series and is also the cutest. He generally wears his S.A uniform which consists of a white blazer, blue shirt, and blue pants. He has a dark brown hair with large brown eyes. Tadashi Karino is the son of the chairman of Special A. Read More: Best Anime Shows of All Time 14. He looks quite attractive when he is normal but during his character change he dons on an appearance like a cat and has two cat-like ears and a tail. He is mostly seen in his school uniform and wears a silver cross on his neck. He is a tall and slim teenage boy and sports blue hair. Yup, now we have the cute cat boy from ‘Shugo Chara!’, Ikuto Tsukiyomi.