Tits feel like nothing when bumped on. I'm married so I know what I'm talking about. Manga always go on and on about it being "sooo soft" but it feels just like any loose flesh.
I've said before on /a/ and I will say it again here. Isekai will never go away because it is so versatile. It can be any genre it wants like this particular sentai-ish manga.
Excellent scifi manga. Rare to find one of such caliber these days. In a few pages, the author manages to introduce to us new characters and quickly show their personalities and motivations without using infodumps and exposition.