Review v 0.3:
Story: the MC is a middle aged man who has been neglecting his wife, son and daughter for years. Shortly after the start of the game, the MC dies in a traffic accident while saving some young guy who's the same age as his own children. Since this was not supposed to happen, the MC gets, by Divine intervention, reincarnated in the body of the young guy who was supposed to have died. But, he needs to promise that he'll improve the life of his old family, otherwise he'll die for good.
The young guy (now MC) turns out to be the best friend of the old MC's son and the crush of the old MC's daughter. Also because of his suddenly changed character, also becomes very attractive to the young MC's sister and mother.
This premise sets the stage for several hot not-quite-incest situations and although we are still in the early stages of the story, the dev makes good use of the situation. All the characters are quite deep and interesting, both externally and internally. My personal favourite is the slightly chubby old MC's daughter, who the young MC has to get into shape.
All in all, great premise which is being worked to great effect so far.
The only negative point of this game is that it is fairly linear so far. It seems to point to a harem involving both his new and his old family, but, since we are still early in the story, we have to see. At the moment there is nothing really to complain about so I won't substract any stars from the rating.
Conclusion: solid 5 star game. I have to admit it is partially bases on the promise of future content but what is there at the moment is truly excellent and well worth of this rating.