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

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

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).

Moreover, buff guys are often avoided for their narcissism.

Why The Simpsons stopped producing Maude Flanders episodes?

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.

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.

How do you see these below?

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Yaoi

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.

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

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

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

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

You found a love potion, and your friend tried to use it on an attractive popular girl, but he accidentally dropped it on the neighbors dog. Now the dog won't stop following him. How would you help him?

Visual-kei

“None of my business” is the common attitude.

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

Why do narcissists devour so much sugar (candy, ice cream, donuts, etc., in huge amounts at a time)?

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