I'm a librarian who loves anime, manga, and reading a wide variety of genres.
Orange (yes, I know the title is supposed to be lowercase, but it feels too weird) - I'm not sure how I feel about it. The ending was a little bit "high school romance saves Kakeru," but it's more "having people who care about him enough to do everything they can for him saves Kakeru." And
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Now that I've read the whole thing, I don't consider this science fiction. At best, I suppose you could call it fantasy. Takano's explanation of how the group managed to send letters to their past selves and create a parallel universe was very hand wavy. Basically:
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Haruiro Astronaut - This took up the last third of the volume and was better than I expected. The main character was the responsible twin, while her sister was the one who always dated the first guy who asked her out and then depended on her sister to break up with him for her. This has two love triangles, one between the twins and a cute guy, and one between the main character, the cute guy's best friend, and a scary-looking guy who was actually a secret softie. I liked the love triangles, I think? They resolved themselves less painfully for everyone involved than I thought they would. I'm glad this was just a one-shot because I'm not sure I could have taken more than a volume of it, but it was pretty cute.
I still haven't decided how I'll rate this volume.