"Sexual attraction?" Akiha raised an eyebrow and shifted into more of a sitting position. "The very definition of platonic love excludes sexual attraction and it's... not proper to couple sexual attraction with familial love. That's, unfortunately, not always the case, just as familial love and romantic love are not supposed to cross."

Not supposed to, but Akiha loved Shiki...

"As for romantic love... That is the kind of love where sexual attraction is acceptable and, in fact, expected, but I don't think it is a requirement. There are some people that just don't experience sexual attraction. It could be because they lack the biology for it via a hormonal imbalance, a lack of reaching puberty, or they're just asexual, having no interest in sex to the extent that the mind suppresses the body's natural reaction to sexual attraction."

...she really hoped that made sense.