'The Mighty Ken' is a short drama vignette about the angst of being a teenager and the friends that make it bearable. The plot is short, getting a first person experience in the mind of an angsty teen dealing with the stress of moving, and his best friend just being a good guy. What I think this story does well is crafting the protagonist with intention. He's abrasive, he's got opinions, and he's expressive. I applaud the creation of your own art assets, they're bold and simple (very south park).
Good job continuing to make VNs, so here's some comments to keep in mind. While I appreciate the very descriptive settings and environment details, it gets really verbose at times. Try to use detail depth to highlight what's important to your story. If everything gets a huge description, it all blends together. While you've developed a really good set of characters, there's not really a narrative happening. Eddie's has an internal conflict associated with moving, but the reader is never clued into why he's so upset about it. He doesn't seem to like school, so is it only because he'll miss Ken? If so, then that needs to be brought forward more into the plot. Stuff like delving more into the friendship of why Ken likes Eddie as a friend. To have a stronger plot, you'd want your main character to need to be able to take some kind of action to overcome the conflict. For example, maybe Eddie hasn't told Ken that he's moving, and he's building up the courage to do so. The one action in this story that Eddie does make, is whether he gets coffee or goes to have a sleepover with Ken, and those results all have wildly different outcomes which are admittedly funny and absurd (getting taunted by the anxiety rats). You've started out with a good base of character ideas, try to push the ideas a bit further on what the characters are going to do and change over the course of the story. Give them some goals and obstacles that they can overcome. You've made some good progress, keep on finding ways to improve on the next one.