Well, I really enjoyed this update. Having Sis back makes all the difference. The previous one was underwhelming, to say the least. Connie as a character has improved as well. She is more likeable this time, and her father seems worse, so there is a little more justification for her attitude and running away.
Is anyone else surprise by how fast things are moving with Sis? She goes from shareing the MC's bed due to some lightning, to giving him a handjob in his sleep (!) a day or two later, to everything short of penetration this update. How long has it been? 2 Weeks? Also, other than at the beginning, the MC and sis haven't really spent much time together, so it seems quite unrealistic, for her to jump into bed with her long lost brother after just a few weeks, without much buildup or even any conflict at all.
Also, the writing. It doesn't detract from the story like some VNs, but it seems very spare. I just don't see much justification for Sis's actions toward the MC. Neither the Sis or the MC seem like they have deep feelings for each other. I guess for them it is just for fun? I would have liked it a lot better if there was more of a romance between the two of them, other than just physical attraction and nothing else.
She is thankful for the MC helping out, but the writing just doesn't convince me of their relationship. Compare that to Rebecca or even Amy from Melody. In both those cases, their relationship was more convincing, and they seemed to have legitimate feelings for the MC, even if it didn't work out in the long run.