Danbooru-based image board with a specialization in high-quality images.
animal_ears boku_no_heroine_wa_te_ni_oenai bunny_ears calendar cleavage maid seifuku shimesaba_kohada thighhighs wallpaper

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Mondaiji-tachi ga Isekai kara Kuru Sou Desu yo? Kurosagi, Kasukabe You, ? but i may be wrong.
or as Crunchyroll calls it "problem children"