Finished reading. This is a dramatic romantic comedy focused on game development in high school. Basically, Japan enacts some spending bills that encourage schools to set up social game development clubs (social games are basically phone games, often with gacha character drops that encourage users to engage with them socially).
The story begins with our hero on trial for leaking information about his highschool club's social game, info that negatively impacts the game's performance and reception online. This results in the game plummeting in the sales rankings, and as a result of the unofficial class trial grilling, Kai resigns from the club and leaves Tokyo behind for a quiet mountain school in Niigata prefecture. Escaping to the countryside unfortunately doesn't end Kai's worries as he's soon unwittingly dragged into joining a social club in Meikei High School.
Book has a lot of interesting themes that it deals in, including not giving up, finding a path forward, dealing with your past head on / dealing with your anxieties through forms of meditation, and changing yourself for the better. It's nice to see characters that actually progress / get better over the course of a story, although there are also some seemingly perfect characters whose only flaws are their personalities / desires.
On the subject of those personalities, there are a decent amount of abrasive and / or broken characters in this story too that I think can bring down the enjoyment for some. There's the annoyingly playful older sister who likes to act the part of the books she is currently writing while also generally harassing her younger brother (in a playful way? At the least, Kai suspects her act is meant to keep him distracted from his anxieties, and she is a decent listener when it comes to his problems). There's the artist of the club, Eru, who sees Kai as another clingy man trying to get into her friend Nanaka Aoi's good graces (you get the sense this has happened before with Aoi). Finally, there's Aya who has a gacha fetish that threatens to steal all her club time and has to be reigned in to work on the game.
Not mentioned above of course is Aoi Nanaka, the mostly positive force in the club. She's had the role of the planner foisted on her because of her lack of skill or knowledge in other roles. Kai acts as the teacher to Nanaka for about half of the book, using analogies about game development to help her understand the technical terminology and skills needed to improve the Meikei social game club games. You'll learn that despite being a bright, personable student, she has a secret in her past like Kai that may threaten her ability to run the club. Aoi is often presented as a defenseless character that needs to be more aware at times, almost verging on the "ditzy" stereotype. While she's very capable and supportive when she puts her mind to things, this element does come up a few times throughout the plot (namely her misunderstanding of Kai as a "cool / mysterious" individual because of his dull + silent as a rock persona; her "upskirt" moment; not following the trends or info about social games enough to know about Kai's incident). Kai too lacks awareness though as evidenced by the ending (your typical harem lead; capable in recognizing and reacting to everything but romance), so I don't think this was a nefarious presentation or anything. Kai also got his game knowledge that he is passing down to Nanaka from a woman named Akane who participated in the Tokyo social game club, so his explanations to Nanaka have no origin in "mansplaining".
Outside of the sister character, there weren't too many cringeworthy moments (barring the one time Kai notices Nanaka's bending form which felt a bit out of place up to that point). I might go back to read some of the more technical scenes (I have a hard time imagining the game that they're making as some of the more executive decision type things and data analysis of the game dominate the plot, only the occasional mention of the actual game mechanics and character designs). It ends on a decent note, but there's only a second volume so far. I hope it continues to be supported in Japan, though the ending to the series is something you could guess / imagine unless the author wanted to switch things up.