If you're looking for manga similar to Tsui, Koukishin ni Makete Shimatte Akuyaku Reijou wo Mezasu Koto ni Shita Mono no (Light Novel), you might like these titles.
"I have something I want to talk about, so wait for me after school." Ryounosuke Tonomura hadn't really been able to talk with his childhood friend Shiori Hinagata lately... So for her to suddenly call him out like that... Could she possibly like him and want to confess her feelings?! Apparently not. Ryounosuke has never had a girlfriend, but for some reason, she wants to ask him for love advice. Maybe she's bad at choosing a good person to ask. When asked what the guy is like, she says he's close to her, kind, and very handsome... He goes to the same school, so she can talk to him whenever she feels like it... She doesn't have have any idea what his contact information is... And she's liked him for ages. Maybe it IS him, after all?! So, in the summer of their second year of high school, a sweet and flustering love story begins between these two awkward childhood friends.
Sato Koharu is a pretty girl that everyone can recognize. But her attitude with anyone is so bitter that she got nicknamed “salt-god Sato-san.” Anyone who tried to get close to her got emotionally injured in a brutal way. Though for some reason, I was able to save Sato-san from pick-up bois where I was working at. Which made her like me, and thus I became a friend of “salt-god Sato-san.” In front of everyone, she is a salt-god, but in front of me, she is so sweet.
Protagonist Sakuragi Ryou was in the "A group" in middle school. At least until he got caught up some trouble and developed a reputation as a delinquent. Wanting to live a normal, peaceful life in high school he decides to do a reverse high school debut, aiming to be in the boring, middle-of-the-pack "B group". Above all else he doesn't want to stand out. But then one day he encounters the school idol, Fujimoto Erika, being harassed by delinquents and begrudgingly decides to help her out. She then starts to develop an interest in him, which is going to make his goal of not standing out tough.
I, Souda Kimitaka, was in the same class as the school’s number 1 beauty, Ezato Mina. However, I found out that despite her flawless exterior and excellence in brains and brawns, she had the same problem as I, namely a communication problem. Initially unconcerned with her, the distance between us gradually shortened when her seat was changed to next to mine.