Otakus. Or, rather, an Otaku called Conspiracy.

Words that you can practice writing with only the first hiragana – the vowels and the k sounds. (a, e, i, o, u, ka, ki, ku, ke, and ko)

ai – love
ue – above; top
oka – hill
kiku – hea, ask; chrysanthemum
koke – moss
ike – pond
kau – buy
eki – station
iku ( ?? ) – go
koko ( ?? ) – here
au ( ?? ) – meet