safebooruhttps://safebooru.org/index.php?page=atom&tags=1boy absurdres black hair black shirt book character name grey eyes hand up hataraku saibou highres kabun (kabunbun an) male focus memory cell (hataraku saibou) open mouth pen purple background purple neckwear shirt simple background solo sweatdrop waistcoat2024-06-01T05:57:32Zsafebooru