So I did a little research on MAL, and I've got a little list of boys of different ranks - lets judge the together.
Ban (7 Deadly Sins)
Meliodas (7 Deadly Sins)
Hak Son (Yona of the Dawn)
Osamu Dazai (Bungou Stray Dogs)
Eiji Okumura (Banana Fish) *(He is gay, but still so lovely)*
Kazuma (Noragami)
Koyomi Araragi (Bakemonogatari)
Uryuu Ishida (Bleach)
Levi (Attack on Titan)
Tamaki Suou (Ouran High School Host Club)
Kyouya Ootori (Ouran High School Host Club)
Sakuta Azusagawa (Bunny Girl Senpai)
Yukio Okumuta (Blue Exorcist)
Natsu Dragneel (Fairy Tail)
Gray Fullbuster (Fairy Tail)
Kiritsugu Emiya (Fate)
Lancer (Fate)
Guren Ichinose (Owari no Seraph)
Kazuto Kirigaya aka Kirito (SAO)
Koutarou Tatsumi (Zombieland Saga)
Kaname Kuran (Vampire Knight)
White Cell U-1146 (Cells at Work)
Shizou Heiwajima (Durarara!!)
Izaya Orihara (Durarara!!)
Shinya Kougami (Psycho-Pass)
Ryouta Sakamoto (Btooom!)
Satoshi Isshiki (Food Wars!)
Koro Sensei (Assassination Classroom)
Well, he was cute when he was a human + he took care of kids when Aguri died, because he loved her. If he wasn't an octopus... maybe...
Yuki Souma (Fruits Basket)
Kyo Souma (Fruits Basket)
Shigure Souma (Fruits Basket)
Shoto Todoroki (Boku no Hero)
I took the most popular characters from the most popular shows. I know I forgot about lots of them, I just wanted to expand the list a bit. We don't have to judge all of them. Ohh and one more thing..
I really didn't want to mention boys from Free! and Diabolic Lover, but I know I have to XD
Personally I hate all of them so do whatever you want with them