Knock and it shall be opened unto you (叩けよさらば開かれん, Tatakeyo saraba Hirakaren) is the third episode of the Junjou Romantica anime series.
Hiroki Kamijou is sitting in a park remembering his fruitless relationship with his childhood friend and crush, Akihiko Usami. His thoughts are abruptly disturbed when Nowaki Kusama launches a toy rocket that almost hits Hiroki. Nowaki sees him crying and immediately drags him off to a group of men watching the rocket. Hiroki learns that Nowaki is a foundling. Nowaki later insists on Hiroki becoming his tutor, to help him with the high school proficiency exam. Akihiko makes a surprise visit, but Nowaki interrupts and confesses his love for Hiroki. He says he fell in love the moment he saw him. All he wants right now is Hiroki to fall in love with him. Hiroki denies his love and tells Nowaki never to see him again. But it is shown later that Hiroki can't stop thinking about Nowaki and actually goes to spy on Nowaki from the cafe across the street from the flower shop where Nowaki works. Nowaki sees Hiroki, and confronts him about it in Hiroki's apartment. This is followed by Hiroki admitting that he is falling in love with Nowaki and thus they have sex. The episode ends with both confessing their love to another.
Debut of main characters in Junjou Egoist:
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