I had forgotten about this thing, and had hoped it stayed forgotten.
So while the premise of the story is interesting, everything else just leaves a spoiled taste. This is probably going to spiral into a mini thing about gacha games but I might as well go there. There's a point, I'll get to it eventually.
I play gacha games, and I understand the rarity system on a game setting. But if you apply this to a "real world" situation like this one, it just seems incredibly skeevy. You use rarity system in game in order to encourage mooks like me to whale money or ingame resources for the ultra ware waifu/husbando or the mentality of gotta catch 'em all. Because, companies gotta make money even if it means preying on people's psychological state and does encourage gambling. (Look, the alien game even asks you to buy points. What's the conversion rate of this dodgy game anyway?) In an actual gacha game, it's possible and even encouraged for you to have multiple waifus/husbando. You can even get away with this because it's not like your digital sweetheart has the ability to kick your sorry ass to the couch for cheating on her/him. Hell, some games even have a ring system where it'll boost the stats a bit. You just need to pony up the money for rings. If you are a mad enough lad/lassie, you can have your entire slots filled with married ships/guns/whatever. You get to fulfill your harem fantasy in a game, win win for you and big win for the game developer. But this system breaks down if it involves actual feelings.
You get to be the king/queen of your fantasy harem troupe because nobody is trying to kill each other. Which is practically impossible in a real world setting because humans are complicated animals. What's the worst possible situation in a harem game/anime? Nice Boat end You get found out that you've been cheating. Why is that a big deal? Feelings. You just stomped all over whatever trust, love, and whatever emotions you two had built up over time because you couldn't keep it in your undergarment. Several outcomes can happen, but you will always lose that precious trust/credibility you've built up. And sometimes your head because one of your love interest is a yandere and you are a scum.
I've gone of track a bit. So let's talk about the rarity system for a sec here. So far, there are the appearance of Normal (big boob girl), Rare (the tomboy who's not even thought of as a girl), Miracle Rare (emotionless ice queen), and Super Miracle Rare (still same ice queen.) According to the alien blonde, she collects R girls to get filthy rich. Going by what we've seen so far, basically she just mooches off the goodwill and money of all the girls she's conquered. You need Points to "Attack" a girl. You gain these Points by either Pay2Win or you go the pleb route of clearing Normal girls. Game doesn't even take Japanese currency, so you gotta clear a bunch of Normal Naka-chan/IDW. Frankly the idea of this is just horrifying to me. Because this is treating all these girls as nothing more than walking wallets rather than people with feelings. You step on the Normal rarity girls to rack up Points just so you can go after the Super Miracle Rare.
The motivation of MC might be to protect her childhood friend who also happens to be some SSR character in a game. But the way she does this makes me want to scream at her to take care of the people around her better while shaking her violently. Look at chapter 4. Let's look at what happens after she goes on a date with the cute boob girl. "Ah. Yesterday was so fun. I didn't find any Rare girls though." Translation to my brain, she's cute, but not good enough. Few pages later, she discovers that there's an R girl in the immediate vicinity. Turns out it's her friend, someone she's never even viewed as a girl. Um... Rather than worrying about silly things like "jeopardizing friendship FOREVER" or "getting arrested for public indecency," she decides to publicly sexually harass her poor friend at the front of school when students are coming in. What the fuck is your damage lady?
On an execution point, this kind of idea could be done better. The World God Only Knows' Keima would be a good starting point. He has 0 interest in real girls. He only cares about digital girls in games. He's only roped into going after real 3D people because plot. Keima may end up "conquering" girls, but he learns and grows from his experience. He may think real girls are annoying and troublesome, but he still went through great pain to try to understand each girl's problem and make them happy. Just in a very roundabout dating sim way. Chapter 2 of Heart of the Girl presents a different way to clear a girl: bumbling your way into making 2 girls already interested in each other confess to each other. So the Yuri Fairy way is possible. But this was presented by an idiot blonde whose sole motivation is to be a leech and mooch off people. So... shrug It also doesn't help that the MC is a big perv whose one track mind means she doesn't take into other people's feelings and considerations at all.
Look, the Bright and Cheery Amnesia thing works because it didn't have a shitty game system that preys on human psychology/treats you as ATM instead of human thrown into the mix. I get it's a comedy and a 4 koma, but christ the execution just makes me want to scream. How do you turn this thing around? I have seen walking chick magnets in other works where the MC attracts cute girls just by virtue of existing and they have much better personality than her. What kind of comedy makes me want to smack people?