Unrequited Love / One-Sided Romance

Udou has been stealing Kiyotake's girlfriends or girls he's interested in because of his desire to be with him. Of course, it only ends up with Kiyotake hating him until they part ways and reunite in college where Udou's unrequited love for Kiyotake is as strong as ever.
♡ Unrequited love from Uke to Seme

Fumi tells his childhood friend Shunpei that he's gay and will be going out with someone. Although Shunpei accepts, he eventually starts questioning Fumi's relationship choices as well as wondering why Fumi didn't choose him instead, even tho he's straight.
♡ Unrequited Love of Seme to Uke

Suzuhara is in love w his guy best friend Nakayama, but his friend is straight and always borrows his apartment so Nakayama can "bond" w his gf. Not to mention that his neighbor Nishino is also always having loud sex next door. One day though Nishino catches him in a depressed state after Nakayama asks to borrow his apt again and that's when things start to change for him.
♡ Uke's unrequited love

Deguchi & Onoda have been friends for 3 yrs after being introduced by a mutual friend. However, Deguchi has been in love w Onoda for that long too w/o Onoda knowing. He wanted to keep it to himself but then Onoda confessed to being attracted to his male coworker named Shima who is Deguchi's ex-coworker. Knowing that Onoda isn't str8 has unsettled Deguchi but he's still afraid of rejection because clearly Onoda is not in love w him despite that.
♡ Unrequited love from Uke.

Aejoon, a HS teacher, is a fan of idol group member Siyeol. Surprisingly, Siyeol comes to the school to film something and he surprises Aejoon because it seems like he's flirting with him! Little does he know that this flirting isn't as straightforward as it seems.

♡ Unrequited love from Uke.

Tomoya faked his age to go to a gay bar for the first time and get laid. There he meets Kei who, upon realizing he was a highschooler, stopped the encounter. He encouraged Tomoya to be more confident in himself instead. After this encounter, Tomoya gained the self-confidence to become an idol. Years later, due to a stalker incident, he had a bodyguard assigned to him who turned out to be Kei.

♡ Unrequited Love from Uke