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

Visual-kei

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

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

How did the DMK alliance manage to keep the BJP out of Tamil Nadu politics all these years? Is the picture now changing in Tamil Nadu after the entry of Annamalai?

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).

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.

Moreover, buff guys are often avoided for their narcissism.

Forgotten in a collection, the discovery of this fossil presents a real problem for scientists as it doesn't belong to any known living family. - Farmingdale Observer

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

“None of my business” is the common attitude.

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

Largest Horned Dinosaur Ever Found Looks Like It Walked Off a Marvel Set - Indian Defence Review

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

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.

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.

Matted Dog Lived Alone On A Rooftop For Years — Then Hope Arrived - The Dodo - For Animal People

Yaoi

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

How do you see these below?

What are women's true thoughts and feelings on bestiality?

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