What is this Old Manga called??

[UnknownSaint111]

It's a very old manga.
MC future wife and childhood friend comes from the future. Basically flirty moments with this future wife but at the same time rebuked by his childhood friend.
It got weird when his future self came and started to be with his wife. The childhood friend and MC witness this.

That's where I dropped it. I can't remember a lot of things now unfortunately.

 

[crazybars]

@UnknownSaint111

This one?

https://mangadex.org/title/5418/dna

 

[UnknownSaint111]

@Crazybars no it isn't but nice shot though, it is strangely similar. I remember the heroine having black hair and a tomboy

 

[LowSanity]

@UnknownSaint111
I think i have an idea what it can be... i will try to find it.

 

[LowSanity]

@UnknownSaint111
I have failed to find it so far. I think it had easy english name, something like Life Plus but i'm not sure.

 

[LowSanity]

@UnknownSaint111
I'm trying to look for it at work but so far nothing came out of it.
Let's try to confirm it's the manga i think it is.

I remember it in colour so it could have been fully coloured or at lest some pages were.
I remeber the artstyle being quite simple, similar to how all long strip adaptation look.
The girl from the future was big brested and had slightly longer hair then her younger version. Blue hair colour, i'm not sure.
A lot of early action takes place in room/apartment of main male character.
Future version had agenda of fixing the relationship of herself and male lead.
At some point best friend of male lead is trying to date the younger version of female lead.
When that is happening something is going on with the future version, she's disappearing or something like that.
Somwhere at the end the male lead sleeps with both future and current version of female lead.

Is that the manga you are looking for?

 

[Edames]

its called she is young im pretty sure it had another name too
or thats at least the one @LowSanity is talking about

 

[LowSanity]

@Edames
That's it, thanks.
Now let's find out if it's what OP is looking for.

 

[Sky]

https://mangadex.org/title/1321/yomeiro-choice
https://mangadex.org/title/3572/kirara
those are what came to mind but I don't think they are quite right