As for "Asexual," a human being can't be asexual. That's mostly plants species with spores and unicellular lifeforms. "Asexual" means "not having or including sex; of or relating to a kind of reproduction that does not involve the combining of male and female cells." Again, this is the dictionary definition. Here's another good definition: "Asexual reproduction is a mode of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it is reproduction which almost never involves ploidy [(which is a degree of repetition of the basic number of chromosomes, like how humans always have 46 chromosomes - 23 from mother and 23 from father)] or reduction. The offspring will be exact genetic copies of the parent." Different types are fission, budding, and fragmentation for starters.
It doesn't make any sense; it's not correct. In all actuality, I rather think Iwaku should take that (Asexual) option off.
Now, we all know the rules here. Let's keep it civil. If you have information pertaining to the correctness of the usage of the latter in terms of people, please provide me with a link to your resource. By all means.
Definitions are courtesy of Merriam-Webster.