Is this some sort of perverted plan caused by a perverted man who couldn't get the mother now his after the sister or trying to get them both in the cause he's too sick in the head and wants to use the son as a bargaining chip. Although it seems like some sort of revenge cause he stops at nothing to get him in jail and get him killed. S it may be something else.
And Miru, don't know what the mystery is. Now that he needs her the most she packs up and leaves. It'' like the Dev don't know what to do with Miru so he gives her the WTF path.
I have checked all you wrote for the last 2 pages and I am not sure how you have been playing. Feels like you have been playing for the sake of scenes instead of connecting with the characters or at least it feels so from how your questions and writings come off. We don't know what exactly the story is yet, worst off all, everything we currently know might get thrown out the window ( with the exception of the last part of 0.6 Full ) as anything before the 0.6 will be fully redone including the writings. I see you have a thing for Miru while a lot of people have issues with her, most of her issues will be addressed with the new update hopefully. Ocean has made it clear he made mistakes with Miru with her NTR as he feels the way it is done is just added in for the sake of adding it in for those who enjoy that stuff. I am neither for or against it, I am against breaking immersion and shitty writing. So just a heads up.. Miru not only gets a bit of a make over but she will be a much more gf material in the remake/revamp and her cheating will be based off on the choices of how you actually threat her. She will maintain her crazy and hyper attitude though. So overall she is getting a big improvement. And I think you have mentioned it before that there are some characters out there who are much better looking then Miru and that is correct, However there are some characters out there who also look a lot lesser if compared to Miru. Miru has a lot of competition but she makes up for it in terms of her attitude and characteristics and being a wild fuck in bed. Based on her back story that was provided in the 0.6 with the MC and her rewriting it is clear that she is going to be dedicated strong and loyal gf and will have your back so long as you have hers. So stay tuned. Miru will be improved. Not sure how many pages back you have read but I suggest taking your time and jump back like 8 pages from this post and slowly read through what everyone says and it might make more sense about stuff you are currently witnessing. Anything Pre 0.6 is pretty much going to be obsolete. It wont be some minor change here and there and some changes updating the models and such, no it is a complete revamp and rewrite/overhaul. The story premises pretty stays the same the writing will be however redone and to make a whole lot more sense.
Hm should i play it now or wait until 0.7 is released ?
You can download and play it now but if you do not want to be confused I suggest just downloading update 1to5 and ignore 0.6. The 0.6 full update it is only the LAST part ( starts with you waking up after whoever it is you slept with in the bus at the camp site ) is part of the rework. Anything before that will be reworked and redone and rewritten. So if in case you want to know what exactly changed and how much has changed for when the actual full rework comes out I would recommend playing update 0.5 and after that just wait for 0.7 or whatever the next update is. Hope that answers your question.
Any chances that with the revamp the mc will have an open relationship? to me it looks more like this would be the type of relationship he has with Miru than the closed one. Or any chance we will be able to make it an open one or something? this doesn't have to lead to a harem (everybody in a relationship together) it can be like "We can be with other people, but I don't need details" so they can romance other people, or just have sex with them without the need of a fuckfest (not that I dislike those)
Current Miru will be obsolete as the new Miru in the rework will be rewritten too match her background story from the 0.6 rework we currently have at the end. She will maintain her crazy and nutty attitude but from what has been explained it can be assumed she will be a whole lot more of a girlfriend material in the rewrite and her paths and what happened all comes down to what choices you as the MC makes that would make her choose a different route, If you are loyal to her then she will be fully loyal to you. The current Miru is a victim of bad writing and having her do some NTR stuff for the sake of having NTR and this will be addressed with her rework and make her choices be more in character with her new improved rewrite.
To answer your question with the current update we have right now as of the writing you can opt and go for an open relationship or swinger route already. However there are no scenes or anything implemented for those as again whatever we know currently will be legitimately dumped in the dumpster. The new update will mean having to play a New game again.
Non of your saves will work. And the start of the game will be altered and somewhat different. Hope this answers it all for you.