As far as I know he's not sleeping with them after they got together.
The sequence seems out of order. But I read this manga a long time ago so I don't remember.
To me it seemed out of order.
One can hang out w/ other ppl and not have to fuck to just get info....They're just learning about life on earth, not get a whole spy thing going on.
And sure, he can get with "other guys" I guess but the author seemed to choose to go w/ the "he got with me even though he's not gay trope".
Why are you being so judgy?
You're only ASSUMING he's sleeping with them after getting together w/ his friend.
He's also horny ASF and trying to control himself so he doesn't go after his friend before they ever got together in the first place, since that's who he fell for first. So, he's also letting out his sexual steam by being w/ the girls. Otherwise he was gonna crush and rape him the way he's been doing. His sexual drive is over the top and he's had a huge crush on his friend since they were little.
so like seme still fcked other girls while being in a relationship with uke right? to get information?