The debate surrounding Umibe ga Etranger puzzled me as to why people are surprised about the coupling. There are multiple manga where the seme is the younger. So I’m compiling some of them in this post.
This is not comprehensive. I will be adding more as a go along.
Ten Count
Tadaomi Shirotani have severe mysophobia, owing to his obsessive-compulsive disorder. He consults a psychotherapist Ruku Kurose who would later fall in love with him.
Mayonaka no Oyatsu
Fuji Azuma was thrilled to spend two weeks with his adorable 8 year old nephew, Taira. But their time together would sooner end. Taira promised that he won’t return until he’s taller than Azuma.
Mujaki no Wanko to Nekokaburi
Yagi Naohito, a man who fears being hated agrees to live with Akasaka Tooru who’d just lost his home. Soon love would blossom between the two.
Osanajimi ga Do M de Tsundere Nan desu ga
Momo has always loved Susume. When Momo confesses one day, Susume’s response was “Let’s try going out once.” Will love between them blossom?
Sensei wa Sonna Koto Oshietenai
Masaki Tsuji, a divorced high school teacher was groped on a train. He would later find out by whom one day when he called a student, Masaki who handed in a blank test paper.
Koitomo!?
Tokiwa is a shy and quiet loner. Haruka, good looking and popular. After a chance encounter, the two would later begin dating. But soon, a mismatch will cause Haruka to question his senpai’s feelings. Will their love survive?
Ecchi Suru Nara Papa Ana de
Yuichiro, an ex-biker in his thirties raises his cute angelic godson Akito. What happens when Akito orchestrates something that would soon lead the two to a whole new experience?
Koiyume Lover
Mikeya Arata works at the university co-op program by maintaining computers it was his routine to go home straight away. But after being confessed to, he found this routine in danger of being disrupted. Would he allow it?
Kabeana Heaven Hole
A younger brother hates being compared to his older brother. This younger brother goes to a store that has butts on the wall to enjoy himself. But then he notices that the person on the wall he frequents has a mole on his right wrist. And his older brother also has a mole on his right wrist. Coincidence?
Kawaisa Amatta Nanika ga Hyakubai
A collection of short stories. Read them individually as they’re all light hearted and fun.