So... the author is basically trying to keep us in doubt as to who will date the otaku, giving us three possible girls.
But we already know who's going to be the one... Probably...
@Nehona honestly if author introduced the three at the start it might have been an interesting take on the 100 days format. Instead of keeping us guessing how the croc is gonna die, keep the readers guessing which gyaru the title is referring to.
@miedziux
For the untranslated text its
ひめかわいいかも~。。。
(Romaji : Himekawaiikamo~)
Its probably abbreviation of himekawa & kawaii, dunno about the kamo part tho since its used to express doubt (google translate says it means 'probably')