Thanks for the reply; I'm happy to have a civil conversation on the internet. They are really rare these days, sadly. Sorry, I tend to write walls of text while giving my opinion sometimes also, so sorry if this was boring to read lol.
After having a few days of thinking and reading your counterarguments, I can see that i was kind of harsh on my critique of this manga. I just expected something way different from what the final product would be. I could easily see someone being intrigued by the duels and having a sparkle of interest about trying out the game after, like I did for Yu-Gi-Oh. I just expected the manga to be about people growing up while playing the game as a background of their life and people accepting their differences to enjoy common hobbies with a more down-to-earth drama and conflicts. I had a similar experience growing up with different TCG card games while being "different," so I probably just projected myself a bit and didn't take the time to realize that the manga wasn't about that. I can clearly see that this is a passion project and the love that the author had for MTG and was probably a bit autobiographic, so I was wrong calling it just a product placement manga.
Regardless, I still have issues mostly with the pacing of the duels and the direction that the story took, especially with the 2000s doomsday stuff and the manga turning into a harem-bait manga for no real reason. I find Kuon annoying and insanely rude toward Lou for no real reason besides creating drama with a pseudo "trauma" reason. I suspect that he was created as a joke character at the start, but the author didn't really know what to do with him. Yakuma's reaction to being rejected seemed fine at the start, since she was clearly depressed about it, but I find her joining a cult insanely random and unlikely to happen in real life. This would have been a better option to show how people really dealt with those emotions in a real way than just joining a cult. Had the same issue for most of the drama in the manga. This would have been better if they talk like real humans being and try to find a common ground and talk instead. I also feel like the characters took too much space in the manga and eclipsed the main couple, which was the most interessing characters. I still find the ending really disappointing, and I don't understand how they didn't talk to each other for 12 years while still being in love but doing nothing about it, while they have mutual friends and she knows with whom he's working. They would have moved on in real life for sure. Would have been way better if they showed their children how to play MTG with the newest set or something along those lines or even announced the final fantasy collab since he's a huge fan of Final fantasy, this would have make sence if he push it to be a new set (the set was out before the end of the manga). They really missed the opportunity of making the ending tie to reality a bit so i was a bit dissapointed.
Also, if they wanted to have an insane YU-GI-OH-like moment, they could have just made a Battle City-like arc where they would destroy the world if they lost or something and remove the brother character and the concert, which have no real purpose. The over-the-top doomsday stuff kind of shifted the realistic vibe the manga had, and it was really hard to take the manga seriously after it for me. This is my problem, though, I think, since I prefer that realistic story over the over-the-top one. My list of manga is mostly filled with slice-of-life stuff these days, lol.
If I had to put a note now, this would be around ~5 out of 10.
I'm happy to see that you could enjoy something that I can't fully, though and I am thankful that you took your time to write, so can you can try to change my mind. I hope you didnt take my message as an attack against you or the work you did on the scans.