It's pretty sad honestly having watched this game essentially lose all appeal over the last year or two. I've been following it for like almost 4 years now and it was one of my most anticipated, favorite games for completion. About 2 years ago this game had like 10x more content, and it played really well with the story and the scenes. Then v0.12 came and we find out that the dev decided to scrap it all and rework the game from the beginning. Since then we've had 4 more updates that each took forever to come, with almost no new progression. We just get a bare framework game with a bunch of unnecessary and clunky UI features, and 2 characters scenes without any real gameplay or story. Game has gone to shit, dev is obsessed with useless decorations and has abandoned any real progress by the looks of things.
Also I've heard they might bring the older brother in for ntr stuff. I really pray that's not true and it was only for the opening backstory. It would completely ruin the story and the build up that we've all been waiting for all this time.