Its story might be what makes it unique. It could have a particular plotline that delves deeper into the emotions and relationships of the characters in a way that other BL graphic novels don't. For example, it might explore certain aspects of the characters' personalities more thoroughly or have a more complex relationship dynamic. Also, the cultural references or the setting it uses could be different from the common ones in the genre, which adds to its uniqueness.
One similar work could be 'Given'. It also has elements of BL (Boys' Love) and is presented in a graphic novel - like style with great art and an engaging story about the relationship between the characters.
I'm not sure specifically what 'Cap deage' means. It could be a very specific term, a misspelling, or something relatively unknown. It might be a proper name, a local term in a certain area or a very niche concept.
I don't have enough information to say exactly who Cap'n Kathy is. She could be an original character created by the fan fiction writer. Maybe she's a pirate - the 'cap'n' part could suggest that - who has some connection to the wizarding world of Harry Potter.
I'm not entirely sure specifically what 'u of u invetro' refers to. It could be something very specific to a particular institution or field. Maybe it's about the University of Utah (assuming 'u of u' means that) and some in - vitro related research or experiences there. Without more context, it's hard to say exactly.