Kanamafu is nice because it's got the toxic yuri aesthetic with a very wholesome core. Mafuyu's willing to trust Kanade with the fragments of her heart knowing that she would treat them with the utmost care. Kanade's found a respite from her own hermitage in Mafuyu's presence. They're genuinely close in a way that Kanade treasures and Mafuyu craves.
But you could also draw them covered in each other's blood and it would still fit y'know











