please help me with the title of a manga that I can't remember. It's about a child that meets a count (?) one night, I can't remember why but the count's glasses break and some time after they meet again,the boy still has a piece of the broken glasses but the count doesn't seems to remember about him, ah and he's a vampire if I remember well. Thank you in advance for any help 
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"Un vero uomo si dovrebbe alzare per lavare i piatti"(cit. caparezza)
