If you liked
Kawaii Joushi wo Komarasetai
|
...then you might like
Bukiyou na Senpai.
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Kouhai falls in love with his Senpai in an office setting. But this is more romantic than SoL. It explores both their lives outside work and how they complement each-other's shortcomings. The female lead is oblivious in both manga but Kawaii Joushi wo Komarasetai takes it to the point of annoyance with the trope.
If you liked
Salad Days
|
...then you might like
Amagami: Love Goes On!
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Amagami is in omnibus format whereas Salad Days is a collection of one-shots. Both mostly involve characters going through rejection but Amagami is a lot more wholesome and doesn't display unrequited love as often as Salad Days.
If you liked
Salad Days
|
...then you might like
Koi Chirakashite
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Similar one-shot pattern. Salad Days is Shounen and Koi Chirakashite is Josei. Salad Days deals with romance in student life whereas Koi Chirakashite depicts romance in the adult life of working women. Salad Days has more of unrequited love stories and doesn't have concluding sex scenes as in Koi Chirakashite. The characters and stories in Salad Days are more diverse and the manga is a longer as a whole as opposed to Koi Chirakashite. Furthermore, some favourite stories in Salad Days are revisited. Those in Koi Chirakashite are not.
If you liked
Kimi no Iru Machi
|
...then you might like
Hetakoi
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Fluctuating relationship with main girl and guy. In Hetakoi, it's the guy who misunderstands and starts a relationship with another girl. Whereas in Kimi no Iru Machi, things are more complicated and multiple partners are involved. Sometimes, it gets pretty dark in both series but have great endings.
If you liked
Provence
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...then you might like
Domestic na Kanojo
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In the second arc of Provence, a childhood friend chases after the girl who just considers him to be no more than a little brother. This is similar to the situation in Domestic na Kanojo where Natsuo chases after Hina while she tries her best to avoid getting in a relationship to preserve their relationship as siblings. In both cases, the female lead goes after another man but later accepts the main character's feelings. In Domestic na Kanojo, this is very complicated and long rather than how short it is in Provence. Also Hina in Domestic na Kanojo is more agreeable and easy to talk with rather than Hayumi in Provence who outright rejects Alan's feelings and avoids listening to him whenever he confesses.