Lost Ruins Let's Play: Back-to-Back Battles with Uniformed Girls, and the Truth Revealed by Beatrice

The protagonist is suddenly summoned and thrown into a dungeon with no memories. When she reaches the camp of the knowledgeable Beatrice, she is told how to regain her memories and which way to go. While exploring, she meets Lami, a girl wearing the same uniform as her. It seems she might be a companion in the same situation, but when the protagonist burns away a slime with a fire staff she picked up along the way, Lami, who had been doting on the slime, becomes furious, and a fight breaks out.

For this fight, the commentator uses a greatsword found while exploring. The commentator explains that in this game, enemy attacks are fast while your own attacks are on the slow side, so landing hits is difficult until you get used to it. They cite as one of the game's appeals that it supports many different playstyles: some weapons, like daggers, can be swung quickly but deal little damage, while others, like greatswords, hit hard but are harder to land. After Lami is defeated in her human form, she transforms into a giant monster, and the player counterattacks while dodging punches from her left and right fists. When defeated, she explodes in a flurry of particles, and a pair of panties rolls out as loot.

Afterward, the protagonist meets Beatrice again and is told that the monster from before was the true form of a "Servant of the Demon King." Beatrice says that if the protagonist defeats the bosses known as Servants of the Demon King, the Demon King's seal will be broken and her memories will return. The commentator expresses doubt about this with a "Yeah, right."

In the snow area, a snow woman appears along with a blizzard. As the attacks pile up, the shadow disappears and the real body emerges, and the snow woman summons snowman samurai. The commentator blocks attacks with a shield while focusing fire on the main body. The commentator rates the game's shields as simply excellent, saying it seems that if you keep your shield up when an attack comes, you can manage most of the time. Near the end, the snow woman changes form by splitting into smaller snow women, and the commentator says it's nice that bosses don't just gradually get stronger but also have changes like this. Since there was no particular event attached to the fight, the commentator jokes that it was "just an ordinary snow woman who attacked as I was passing by."

Next, the protagonist encounters Rosie, a uniformed girl who loves meat. Though the protagonist approaches in a friendly way, Rosie mistakes her for someone who has come to steal her meat and turns hostile. Rosie attacks in quick, small bursts, so the shield comes in handy here as well. When Rosie tires from her continuous attacks and leaves an opening, the protagonist circles behind her, and the commentator explains that attacking from behind is advantageous because it deals extra damage. In monster form, Rosie charges in with body slams and also eats goblins that appear to heal herself, so the commentator decides it would be troublesome if the fight dragged on and opts to whittle her down quickly. Against Rosie's final form, in which she wails and rampages, the protagonist hides using invisibility and lands a blow from behind to defeat her.

What looked like a treasure chest turns out to be a mimic, and the protagonist is enveloped in light and transported to a mysterious space. At first, a small mimic with a cat girl inside throws fish bones and the like, and after it is defeated, a large cat girl emerges from a large treasure chest and attacks while spilling treasure everywhere. The commentator says they've seen many mimics over the years, but this may be the first one this lavish. After it is defeated, it explodes, scattering gems — a scene the commentator wraps up with "...or so I dreamed."

The next opponent is Yuri, a magical girl who hides herself with invisibility magic and who had repeatedly warned "Don't come" along the way. The protagonist has no memory of doing anything to earn her resentment, but since Yuri is hostile, they end up fighting. The commentator sticks with the weapon whose high damage they liked in the previous boss fight, and makes use of a mechanic whereby attacking after casting invisibility magic guarantees that the next hit is a critical. According to the commentator, this is the highest-damage method available at this point. While dealing with the hordes of undead Yuri summons, the protagonist aims for blows from behind, barely dodges Yuri's attacks after her transformation by rolling, and defeats her with a final strike.

In the dungeon's garden section, the protagonist encounters Jun, an insect-like uniformed girl. Here the commentator praises the beauty of the cherry blossoms in the background and the crisp contrast between light and shadow, and also says it's nice that the scenery changes completely from the gloomy atmosphere up to that point.

In this fight, the protagonist uses a triple-shot bow received as thanks for helping someone in trouble along the way. Joking that "It's three against one, so we win" and "I can also reflect with my shield, so it's effectively four against one," the commentator gradually corners Jun against the wall. Once her human form is whittled down, Jun casts off her uniform and transforms into a form with giant spiders sprouting from her knees. In response, the commentator equips winged shoes and attacks while floating gently in the air. When the boss leaps up, the protagonist summons fireballs to burn away the spider webs. This spell consumes a lot of mana, but the commentator says they could use it freely because they had brought equipment that restores mana. They explain that arrows can't get through while spider webs are present, so if you're fighting with a bow, it's safest to burn them away with fireballs.

The commentator says that while quickly taking down enemies with a two-handed weapon is exhilarating, chipping away at them little by little with a bow is also fun, and adds that since the game's exploration elements aren't all that extensive and it seems to be designed with surprisingly high replayability, it would also be fun to do multiple playthroughs with various weapons. When defeated, Jun explodes in cherry blossom particles, and the loot is a garter belt.

On the top floor of the area, the protagonist meets Kana again, whom she had met early on. Previously, the protagonist had helped search for Kana's lost katana, but because Kana was enjoying cutting off a goblin's fingers, the protagonist had quietly walked away at that time.

This time, the commentator brings a dagger. They explain that it's a fast weapon with high critical damage, making it a good match for the quick Kana. On top of that, the spiked shield is also excellent: for one second after guarding, attacks become criticals, which the commentator says means "basically it's critical all the time, which is the best." Even after Kana transforms into a monster, the protagonist keeps attacking from behind with the dagger and defeats her. This time, she sinks away without dropping a relic. Looking back on the bosses so far, the commentator remarks that with a slime girl, a carnivorous girl, an undead girl, an insect girl, and so on, the game covers a wide range of tastes.

Here, Beatrice reveals the truth. The protagonist is not someone reincarnated into another world, but a magical creature created by Beatrice, and the enemies she has defeated so far were the ones who were actually summoned humans. Surprised, the commentator takes this in as "So Beatrice is basically my mom," and jokes that her hairstyle is starting to look like a godmother's.

With all the humans who were to be sacrifices defeated, everything is ready to drain the Demon King's power, and Beatrice begins the ritual. The protagonist is trapped in a place resembling a hill of swords, which the commentator speculates might be "a graveyard of all the failed creations up to now." After making her way through the artificial-human testing grounds while being attacked by failed creations that closely resemble her, the protagonist meets Beatrice again, and learns that she is no longer needed and that the plan is to dispose of her here.

For the final boss, the commentator brings a sledgehammer, the heaviest weapon they have on hand with the highest single-hit damage. They combine it with equipment that boosts two-handed weapon damage and a helmet that grants extra strength when near death. As a result, a single hit deals 138 damage, and the commentator happily says, "This blows away all the fatigue of daily life." The protagonist also smashes the minions the boss summons and defeats it.

Investigating the Demon King's seal reveals that the Demon King had merely been reduced to the form of a demon king and apparently was originally something sacred. The protagonist breaks the seal, but Beatrice has already drained enough power, and the protagonist currently lacks the strength to defeat her. There's mention that this would be the case unless she had a legendary holy weapon, and the commentator emphasizes this "legendary holy weapon" by repeating it again and again.

Perhaps out of parental affection, Beatrice seems willing to at least spare the protagonist's life, and the protagonist ends up escaping. A kind goblin she had met several times along the way shows her an escape route, but this goblin, too, was a victim of the experiments. When the protagonist falls into despair, the goblin persuades her that "just being alive is a win" and leads her outside.

The commentator sums up that while they had expected a game packed with fetish elements, the world and gameplay are well put together, and it turned out to be a fun game with surprisingly high replayability. They then close the video by encouraging viewers to find out for themselves what would have happened if they'd had the legendary holy weapon.