If you're looking for manga similar to Ore no Kanojo to Osananajimi ga Shuraba Sugiru 4-Koma, you might like these titles.
Yamada has not had a girlfriend in his entire 30 year life and is still a virgin. He'd had a crush on Tanaka in high school, and to his delighted excitement, when they met at their reunion they began going out together! But because Yamada has had 30 years of absolutely no experience with women, he struggles with even the absolutely simplest of things, such as holding hands. What makes it more complicated is that Tanaka is also a shy person who isn’t great at leading him through the process. The couple awkwardly makes their way through the relationship one nervous step at a time.
Shinomiya Kyouya is forced to become a new member of the GJ, an unidentified club that duels in a room of the former building of a certain school. Here he meets the club leader, Mao, a short girl with a big attitude; Mao's younger sister, Megumi, who has the heart of a bipolar angel; the recognized genius with a lack of common sense, Shion; and the always-hungry and mysterious Kirara. Time flies with these unique girls around.
Washizu Miri, a second year high school student, is a small 148cm tall girl who has acquired a reputation for being violent and dangerous.
They say the world is going to end in five days. Now what to do until then? Follow Fuji, Touko and Nitaka on their last school days preparing for the end of the world. Meanwhile, Niino, a clumsy devil, announces that she’s going to destroy the world in five days from now. The hilarious chaos is complete now.
Echo-Pun is a 4-koma about Eiko and Haruka, two childhood friends who loved superheroes and pretended to be heroes while playing together. While in grade school, Eiko had to move away, but the two promised to meet up again in high school and become superheroes for real. Haruka grows up into a normal girl, and upon entering high school, she suddenly meets her old friend Eiko. Eiko, however, is wearing a costume, fighting bullies, and calling herself Echo, a superhero. Haruka tries to keep Eiko out of trouble with both the bad guys and the disciplinary committee president, a girl named Kamikaze Shiori who, for some reason, seems quite interested in Eiko. Can Haruka lead her old friend to the stable side of society, or will Echo drag Haruka further into the world of alter egos, costumes, and justice than she's ever gone before?