Hellow World is surprisingly good in a number of ways, but it definitely falls short in some.
Renders: Great renders overall. Clear, and somewhat realistically lit. For a first release, it's actually really strong (comparing to myself, at least.). Absolutely nothing to point out with lighting, noise, or anything of that sort. There's a lot of sticky clothes on the girls, however. I'd recommend looking into Breast Helper and/or Clothing Fit Helper for future use, which'll give a more realistic fit around the breasts/hips/waist/etc. They currently stick out pretty sorely. There's other little issues, like the HDRI outside of the nightclub being clearly below the street of the scene, but that's borderline nitpicking and something that'll get fixed with time. Animations are also solid, as well.
Where Helllo World falls short is it's writing. Mind you, it's not the grammar/punctuation (which is better than a lot I've seen, a native English-speaking proofreader would have this fixed in minutes.). It's the pacing, and clear lack of knowledge/experience, or even research in what the dev is/was writing. Or logic that just straight up doesn't make sense.
Pacing + Nonsensical/illogical writing: It's already been spoken on, but it seems like everything is basically bam - bam - bam. You fuck Clara after getting Mark locked up, jump months in the future out of nowhere, and then boom - pregnant. Samantha just doesn't make sense. Wasn't she a quiet, shy girl who avoided the limelight because of her hair? Then she's all of a sudden getting reamed doggy by Mark and humiliating James, that he isn't enough of a man to please her? She didn't want to go to the party, but ends up being the slut of the football team's QB? Is she shy or a slut? Her switch in personality is jarring, and illogical. Tom is crazy, no? Or at least that's implied by James. Yet, he's driving a nearly six-digit car (or at least that's what the asset itself is considered.) and somehow sane enough to hold down a job (provided his parents aren't rich, don't think that was mentioned, however.) that pays enough to afford it/afford the payments.
Fact checking/outright false writing/etc: There's little stuff that can be looked pass, like the time served for assault. Which generally isn't three years, provided weapons aren't involved. Speaking as a clinical psychologist (don't have my own clinic ), you aren't getting any medical degree in or license in three years unless you plan on counseling/interning while going to school. You're looking at eight years, at the very least. There's also the common practice of not seeing/treating someone you know/knew as a psychologist, for the exact reason shown in this VN. You lose all objectivity as you already have preconceived notions of that person formed.
Here's where it gets wrong and/or straight up illegal: Talking about a patient with another patient, as James did with Clara. There's rare cases where a psychologist can discuss medical dosages with a family member/spouse/roommate/sibling, especially if they're in danger of overdosing. But it's very much a law-breaking violation, and would end his clinic if caught. Then there's keeping patients records where other patients/non-employees can get them. Receptionists are given contact and other non-confidential information for records/appointments, but nothing like addresses or employment would be kept with a receptionist.
That's not to completely slam the writing of this VN. The internal monologue of James is strong, and the themes of growth. How Mark and/or Sam taught him that reality is bitter, that you need thick skin as an adult. That if you want something, you need to go after it yourself.
This is a promising first release from the dev. All of the criticisms are pretty easily fixed with some prior research and/or editing, or stopping to think "How would this character handle this? Why would this character do this when he/she was like this before?"
With all this being said, definitely looking forward to more.