Martin the marten. Sure, makes sense.
To be slightly more serious, this was decent - the cutesy romance parts accomplished what they set out to do, but this could have benefitted from an extra revision or two to tune up the pacing and proofreading.
General spoiler warning.
Presentation-wise, I think this is mostly fine. Sprites are solid, though I think the CGs look substantially better (but this isn't unusual for VNs, so fair play), and the music was inoffensive. As some others have noted though, some of the writing was mechanically (e.g., spelling, grammar) rough. FdRstar already called out one of the more egregious examples on the store page, but for another example, "I won't do it unless there's fabric on my ass" should probably be "I can't do it with fabric on my ass". There are other more minor instances of this throughout, like "Despite me being raising my eyebrows" - cut "being" from that; "Both of us do a handshake" - should be "we shake hands". I get the feeling a lot of this is due to rushed translation (from French, presumably?) and I know that's really tough during a jam, but some of this did cause a break in the flow for me here and there.
Substantively, I think the core plot of "lonely tech nerd park ranger happens to meet radio crush, they bond and they bang" is totally fine, but some of this VN's script felt a bit like padding to me and I think a lot of it could've been cut down.
The opening scene is mostly fine, giving us an introduction to Rene and his current state before going on vacation. I think the reaction to the teenagers is a bit overdramatic but it gets across that Rene is frustrated with his job and needs a break. Also if anyone refers to 24 as old again I will scream.
Pretty much everything between that intro and meeting Martin at the yard sale (I don't know what the French equivalent term is) is kind of irrelevant though. Celine's only purpose in the narrative is to reveal she's great with computers and help out one time before disappearing so the leads can bone, and the grocery store's narrative purpose appears to be introducing that Martin lives in the town and that he's gay. You can probably cut all of this.
Instead of having Rene just happen to stumble upon Martin in the small town of "...", have him know that's where Martin lives. To make it less creepy, have it still be an idyllic town with trails and such that Rene wants to explore, but where he can also hope to run into Martin. Since you establish in the intro that both Rene and Martin are into electronics, just have the first time Rene sees him be at the yard sale picking up the Commodore 64. You already give other signs that Martin is gay with the pride sticker in the car and the porno mag in the studio, so just have those be the realizations for Rene, and now you don't need the grocery store scene at all.
Same idea for Celine - instead of having the computer problem solved by otter ex machina, just have Rene and Martin brainstorm ideas with their shared knowledge and understanding, deepening their bond as they solve the issue. Then, in the euphoria of having turned on the computer, they bang.
So by cutting the grocery store and Celine, you get to the point and stay on point much faster while still keeping the core of the story intact. It would have been nice to see that time spent on more of a post-sex scene with Rene and Martin, since the current end of the VN feels a bit abrupt.
Overall, still a solid effort, just could use a few tweaks to really shine.