That Happy Summer daughter model is cute - sadly, not much else in that game is good, and the pace of development totally blows. DDL doesn't have any grind (so far, fingers crossed), so that's a big plus.
Single Again is a good one - you don't have to play the spinoff at all if you don't want to.
Neko Paradise and Radiant - one of the devs had some real life issues that kept him out of the game (pun intended) for a while. He's fine now, so things should be back on track fairly soon. The sandbox in Neko is one of the least annoying ones I've seen - the hints system is so good you can just look up when the next event is going to happen and simply advance time as needed.
Back to DDL - yes, I would really love the girls to have smaller, perky breasts.
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Perhaps the dev is using the large breasts to ensure that the girls don't look too young.
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Just looks weird, IMHO.