How conservative the Japanese people really is? And the government?

Yaoi

They were very similar to the bromance of today but accompanied by sexual intercourse.

We don’t instantly tie it with sex when a father and his very young daughter are taking a bath together.

Why does my crush make me jealous about having a girlfriend?

They don’t tease or beat up cross-dressed people on the road.

Moreover, buff guys are often avoided for their narcissism.

This is a very vague question. But considering the asker’s comment on Mr. Nakajima’s answer, your interest seems to be in sex-related matters (I don’t think it’s the only indicator of conservative/ progressive, though).

Do women wear undies under leggings?

They don’t bring around their mates everywhere, which means they don’t worry about being single, gay, or whatever because no one cares about whom others are having/ not having sex with.

How do you see these below?

They don’t have the so-called “couple culture” seen in many Western countries.

Why do people have trouble accepting the very true fact that "The Blue Marble" photo of Earth is a composite and therefore (just like every other subsequent "picture" of Earth NASA has ever shown us) not a real photo but computer generated?

Visual-kei

I’ve heard it’s always the male side that is expected to take a move in some countries. It’s not the case in Japan.

In the old era, gay relationships were very common and were even praised among the privileged social classes, such as Samurai and monks.

Feeling antsy in your legs at bedtime? This condition may be to blame - CNN

They don’t have the value that “guys must be macho.”

I sometimes feel people from the West are obsessed with those “gender” and “sex” things too much. Let’s think about something else sometimes. It’s unhealthy.

It’s very common for a girl/ woman to ask a boy/ man to be her boyfriend.

What trains transport cars and passengers near Pompano Beach, Florida that goes to New York?

“None of my business” is the common attitude.