Megane To Koi To Aoi Tori
The second couple is much better than the first couple, but both stories are just sort of meh.
Bokura no Koi to Seishun no Subete
Chiharu, the vice-president of the archery club, only gets the job because of his position as a third year, even though he practices a lot. He is always overthinking archery; it's only when Naagame, first year and genius newbie to the high school team, comes to the school, that he gets a break from his thoughts with Naagame's ardent love for Chiharu... ~ Chapter 3
18 Unlimited
Same vibe as 19 days, with less emotional depth.
Eyes speak more love than the mouth
I wish it had been a little longer and fleshed out their relationship more, rather than just putting an epilogue at the end. About the manga: it was so good! Both characters grew because of their interactions with each other. I especially loved how philosophical and self-aware the main character (the one hiding under a mask of happiness) was. He understood the flaws in his own personality and was receptive to the growth that he experienced due to his interaction with the love interest. Also, the love interest was a very kind person, and his bluntness was pretty great. Fujino and Mad-dog Tsukada seem like total opposites. One is a clean-cut smol bean, and the other is a large, scary fighter whose rumors are second to none with regards to his looks. One day, Fujino, who is fake towards other people because he is scared of being hurt again (by people in general), goes up to the rooftop only to find Tsukada, who says his smile is "shady." And it is shady -- he is fake because he doesn't want to offend people, but is shocked at getting called out by Tsukada. He ends up revealing more of himself to this person, who is unexpectedly kind, gentle, and polite despite all the rumors surrounding him. Then he started to blush after Tsukada said something to him, but freaks out after he guesses what it means. This is the story about a smol bean who wants love and kindness, but is too scared to get it through vulnerability, and a misunderstood and gentle 'delinquent.'
Back to School
Guy goes back to school, only to have to face his past (his stalker/former "best friend" who raped him) and his future (another stalker-like character who goes on and on about 'saving' him). Luckily the latter has a lot of genuinely good qualities, one of which is being there for the main character. He ends up in the hospital after a series of events at the end of the manga, only for him to actually resolve part of his past with the former best (doesn't forgive him, but makes peace with his past) and start his life anew. ~Chapter 45.5
Like a Sugar