You see, the problem is not immortality itself (or rather longevity), but its consequences for them. The girls have lived for at least 500 years, judging by the history, and that's a long time! During this time, a lot of things in a person can change at least. They weren't just sitting in one place, but developing, right? Since the pink-haired one had already created a teleporter, they could at least try everything possible in such a short period of time. And given the scientific research of the pink-haired woman, she could even invent a reduction device (prototype) so that the girls could get into the hero's world and find happiness with other men, because it would not be fair to other girls that they would be left alone. And not all guys have a giantess fetish. Or to establish a dislocation with another world from where girls come from and where those men who want to live can go. I know it's possible to wander a lot, but this moment in the plot haunts me. And please don't make them invulnerable. By the way, which giantess is not capable of reproduction?
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I will elaborate a little on that topic once I'm back from my trip around five days, but in short the giantess are not invunerable and can still die if they got sick or killed. As for reproduction, the giantess can still get pregnant technically, the only problem there is no male to mate with them in their world, but with the MC entering their realm, everything change.
I finally return from my trip. First of all, I must thank you for your fair criticism and I'm sorry if my last reply was short; I replied your comment from my cell phone during my travel and to be transparent, I'm more comfortable writing on my computer.
Like I said on my previous post, I wanted the giantess growth event happened a long time ago but didn't thought about the immortality aspect and It wasn’t my intention to make the characters almost immortal. I plan to do some rework of the characters back stories for 0.1 release and I will add some details regarding their longevity and how they could die because they don't live forever.
Speaking of longevity, it depend the perspective. 500 years from a human point of view is indeed a long time, but for a giantess with a very long life span, it's just a norm. After all theses years, the giantess continue to evolve but more slowly because there is less people in this world to share knowledge with so technology didn't progress that much. Patty (aka the pink-haired girl) is the smartest one around, she do a lot of tinkering and create some devices in attempt to overcome some challenge the giantess face currently, but most of her invention failed. If you've checked Ophelia's introduction, she told the MC that Patty already attempted to create a shrinking device, but didn't work at all. She will get it working later in the story but the shrinking capabilities will be limited. For example, her device can shrink down a giantess at 10% of their size, meaning for a giantess of 120 feet tall, she will reduce to 12 feet maximum and last for only for a few hours before growing back. Patty will explain the technical reason for this limitation, but I won't spoil it right now.
As for the reproduction topic, this is an upcoming challenge the giantess will face with no male around, but due to her longevity, it's not a big deal at the moment. The giantess still have desire for sex, they do masturbate time to time to get some relief, but they quickly get horny and have a hard time to keep control of themselves with the MC is around and have a strong desire to mate with him. The MC will be the key to solve the reproduction problem in that giantess world but the idea here is to open a harem story path later in the game. but you can do a love story with one of the girl as you want. The MC can still return to his own world, but there will be a story twist.
I'm not sure about your statement on "not all guys have a giantess fetish", but this is a giantess fetish focus game, that include minigts up to gigagts, and some MC shrinking scene and will remain that way for the whole game.
I understand you, but let me make it clear - giantesses were originally people too, that's why I brought up this topic. Yes, they've become huge and they've lived longer, but that doesn't take away from the fact that they were all originally human women, which is why I thought they had to change a lot during that time. They didn't become aliens or monsters, but only grew in size and began to live longer. As for the reduction device, I'm glad that it will be in the plot. And now the last part, which you probably did not understand. I wasn't talking about the main character, he has a fetish for giantesses, that's right. And I wasn't talking about the main characters, I'm talking about ALL the giantesses from their world, and all the guys from the world where the main character came from. The main character's harem won't literally consist of all the giantesses, right? That's why I suggested that it wouldn't be bad to establish contact with the world where the main character came from. To make an ambassador out of him so that he can establish contact between his world and the world of girls, because I am sure that other girls (besides the main three) want happiness in life. And something tells me that their children will be smaller than their mothers, and the world of giantesses can be repopulated by humans.
What I basically want to say to everyone is this: If you can still include in your plot a twist where not only the main character and his chosen ones get a happy ending, but also other girls from the world of giantesses, then I would be glad. And I’m not talking about a harem, because absolutely all the girls (and I’m sure there are quite a lot of them) won’t be able to join it. Each girl (except for the main character’s chosen ones) should have her own beloved, so to speak. And contact with the main character’s world could help the development of the giantess world.
Yeah, the giantess in this world are still basically human somehow, but they have to adapt to their giant reality. For example, they consume more food than before so they have to change the way they produce it. All giantess are split into a small community of 6 to 20, each of them produce different food and can trade them at a central market hub that connect all different community nearby. The main goal of this is to avoid long travel and food waste as much as possible. That concept isn't perfect, but efficient enough to make sure all giantess could eat correctly.
Another adaptation for the giantess is they are simply too heavy to use any kind of transport such as cars or planes so they have to travel by foot only. Trading with other giantess living on another continent over sea is nearly impossible. They can still use a boat to access other continents, but this means of transport is very slow and pretty dangerous for them. Since the giantess eat a lot, they have to carefully manage their ration during their travel; if not, it's a certain death.
For the harem path, it will consist only the six giantess the MC interact with in the main story because let's be honest, the MC won't live long enough to have sex with all existing giantess which is estimated around a million.
And finally, I like your suggestion to make the MC as an ambassador between the to world. I will keep that in mind.
Here! THAT'S IT! You've come up with the perfect plot for yourself! Think about it, if giantesses can't travel by transport and trade with other continents is impossible, then this is where politics should come in between the world of giantesses and the world where the main character came from. But think for yourself, given the size of the girls, they can easily create ships or planes for ordinary people, and those can establish trade with other giantesses for them or install sinks to teleport giantesses to a new continent. In fact, it will be mutually beneficial for both sides! In fact, girls will be able to start relationships and have children again (well, having sex is more or less normal if our pink-haired inventor can improve the reduction system or at least extend it), trade and communication with other girls will be established, technology can be introduced again, and so on! You have a plot that basically gets into your hands! Patty's teleport is essentially the solution to all the girls' problems (and I'm not just talking about mixing between islands) It will breathe life back into the world of giantesses, and it will be even more fun. Of course, not every guy wants to live among giantesses, but I think there will be enthusiasts and interested parties in this + giantesses' resources and technologies over these 500 years...it seems that you may soon have a good story or even more.
What I basically want to say to everyone is this: If you can still include in your plot a twist where not only the main character and his chosen ones get a happy ending, but also other girls from the world of giantesses, then I would be glad. And I’m not talking about a harem, because absolutely all the girls (and I’m sure there are quite a lot of them) won’t be able to join it. Each girl (except for the main character’s chosen ones) should have her own beloved, so to speak. And contact with the main character’s world could help the development of the giantess world.