 If you liked
Yuusha ni Narenakatta Ore wa Shibushibu Shuushoku wo Ketsui Shimashita.
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 ...then you might like
Plastic Memories
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These two anime feature a main male character with dark hair, and a female main character with white hair. One of these two joins the main setting of the stories, the workplace, and the other is tasked with teaching them what to do. These anime are mainly about how the two characters grow closer together and change thanks to each other. There are also other female characters in both series that may or may not have feelings for the main male character.
While Plastic Memories has more romance while Yuushibu is filled with fanservice, both are enjoyable watches.