Jugram Haschwalth of the Wandereich is a long haired, slender and pretty Bishonen.Yumichika, notorious for his beauty and his obsession with beauty, used to have long hair that was fashionably styled until he joined the shinigami, whereupon he cut his hair to chin-length.His female third seat, Kiyone, is hopelessly in love with him. His Heterosexual Life-Partner, Kyoraku, keeps referring to him as a ladykiller because female shinigami can be reduced to blushing jelly if he so much as smiles at them. Ukitake has waist length white hair and is considered gentle, kind, and attractive.The Shinigami Women's Institute keeps voting him the sexiest male shinigami in their annual polls. As a stoic nobleman with raven black hair and pale skin, he tends to be very popular with the women. Byakuya has long black hair that falls just past his shoulders.Griffith, the resident Bishōnen from Berserk who hordes of male and female characters have a fallen for and obsessed over during the course of the series, has waist-length white waves that the fandom has affectionately dubbed "cloud hair".From then on whenever he appears in this state he's nicknamed "Sexykawa". Beelzebub: When Himekawa loses the pompadour and sunglasses, his hair is revealed to be very long and beautiful, and he's so handsome his classmates are left speechless.A non-human example comes from Long-haired Bananya in Bananya, as seen here.This, coupled with his handsome looks, makes him a definite long haired pretty boy. By the time Eren is 16 in Attack on Titan he has grown his hair out in contrast to his short hairstyle he had when younger.Turns out his mother won't allow him to cut his hair, because his mother, who wanted a daughter instead of a son, wants him to look like a girl. Nagisa from Assassination Classroom has long hair tied into pigtails, which makes him look like a girl.
In Aruosumente, Moeran stands out even among a Cast Full of Pretty Boys thanks to his Rapunzel Hair and loose robes.Bonten, a suave, vain demon who Word of God calls the best looking guy in the series, is unique for his long blond hair which he ties in a ponytail, but sometimes lets down for alluring effect.
Being set in the Edo Period, all men have long hair, but the longest belongs to Ginshu, who wears it loose and is pretty enough to have masqueraded as a woman for years.
Anri once gained his long curly hair back after he degenerated to his child form.
Shiro has since cut his hair to be free of a guy who held him captive as a slave due to his beauty and it remains past shoulder length.