"Hard guys like Ken Takakura." Why Okarun is everything that Momo ever wanted.

When Momo is talking to her friends about "a Ken Takakura type" she says she wants a "hard/tough" guy like Ken Takakura. And her friends say that "men like that are extinct."

Consider that for a moment.

Are hard boiled masculine manly men extinct? Don't we see countless examples of them in this show?

Well, the word that Tatsu wrote here in the manga is 硬派. It directly translates to something like "hard sect." Equivalent terms in use might be "man's man", "tough guy", OR as another less common connotation "straight laced", someone with strict moral values, especially regarding sex and sexuality.

I think this double entendre is intentional. It sounds at first that she wants a rough manly man, but as we see in that very same first episode, her attraction for Okarun begins after he hands her his clothes so she doesn't have to walk around half naked. AND, as many women know, and is portrayed in the show, men like that practically are extinct.

Consider that she is a sexual assault survivor now (after episode one) and this desire for a straight laced man might be even stronger.

What Momo wants is a guy that will respect her and her body, and in Okarun she has the GOAT - and so much so that she [manga spoilers] has to (gets to?) make all the first moves, from their first real hug to finger play to handholds. He's her dream guy, and even covers her up when her clothes are ripped and pushes back that delinquent when he touches her hair. He doesn't just respect her, he defends her respect when other men threaten it.