Doing a once over of the game from the beginning to find any problems. I noticed that during the conversation with Bogthos about the conduit for corruption, there is a missing 't' in "corruptive" making it "corrupive," as well as a missing 's' after victim' (though that could just be a case of the text box cutting the 's' off). During the argument to decide to kill Terindus, he missed his 't' for "get." During the strip command with Misaki when she excitedly starts stripping for the first time, she mixes the 'e' and the 's' in "else" resulting "eles" being created. Rina's "Misaki seems a little different..." line is missing the 'tt' in "little." During the "sex" command, Misaki's maid skirt goes all over the place with clipping into itself and her thigh. The last "level up" for Misaki's corruption has a missing 't' for the first use of "next" making "nex." There is a missing apostrophe when Misaki is begging for cock after coming out of the pod for the first time after starting her final corruption scene, while "cant" is a word, in this connotation the correct word is "can't." Post corruption Misaki "Throne Sex" is missing 'n' in "being" when talking about being a "mindless slave." During the doggy style sex with Misaki, there was a lot of clipping going on with regards to her wings, at the start when she has one arm pulled back with her leaning over to one side, her tail was clipping through her wings, when she had both her arms held back, her arching back caused her wings to be slicing into her arms. Aside from some minor typos, the only consistent model issues I found were from hair having no collision or physics to them, resulting in the hair consistently clipping through things that it shouldn't naturally be going through. I might have missed some spelling errors before Misaki was fully corrupted, namely with Ramanos, but I will not willingly talk with that guy if at all possible.
After seeing the maid outfit on Misaki during her corruption scenes, I feel it would be interesting to include alternate outfits to spice the scenes up after completing corruption, instead of having a consistent bodysuit to wear throughout all of the sex scenes, giving a different feel when railing the corrupted harem of ladies.
When discussing what the next task will be after imprisoning Yukako, Rina, and Ramanos a rogue 'Y' appears at the beginning of a sentence making it "YWe'll see when it's time for that." Your missing a second f when Bogthos is telling you how you can corrupt people from now on creating "efective" instead of "effective." Minor grammar mistake where names don't have the first letter capitalized, noticed when you hand Bogthos the old journal to grant the ability to teleport in the castle, his name is all in lower case. Bogthos has a capitalized word after a comma with this sentence being made; "Now, Give me a moment." instead of "Now, give me a moment." When Bogthos returns the Journal there is a missing 's' in the statement; "Bogthos give you your journal." instead of "Bogthos gives you your journal." which could also be extended with a 'back.' Eistos comments about the village to the east, but his village is the one to the east. When Bogthos is discussing conquering Holmdow, he says "It is common for it to be attacked by monsters, and rarely gets visitors, so it isn't uncommon for little contect to and from the village.", I believe "contect" should be "contact." Missing 'r' in "army" when stating how they can take most settlements. When the statement of Telind being taken pops up there is a missing 'e' in "receive." I left Vlester as the last to take, and when Bogthos states so, a 't' replaces a 'r' the statement; "Vlester is out only available target." When stating against leading the army through the sewer 'm' and 'r' are switched. a bit of word clipping with 't' being cut in half and 'y' being eaten from "city" when stating the stationing of the troops after Vlester's surrender. When the MC recounts Zerethin Wall's history he mixes 'i' and 'e' in "Centuries," and replaced 'u' with an 'a' in "humanity," also I think there is one too many spaces used before "Centuries." "Idea" is capitalized, despite being at the end of a sentence. When Bogthos states about how they had been dealing with the Zerethin Wall, he has an additional 'l' in "always." When Bogthos describes Zereth's loyalty, 'i' replaces 'o' in "of" resulting in the fallowing; "rare for such a time if crisis," instead it should be "rare for such a time of crisis." During the second discussion with Bogthos about history, 'e' and 'l' switch places in "struggle," and 'r' and 'u' are switched in "century," 'e' was replaced with a 'a' for "strengthen" with 'e' in "divine" being cut off in the text box, an 'e' is missing in "heroes."
I'm going to wait for the complete corruption of Yukako and Rina before I continue with anything story related, though I have one bug I have to state about the stairs. They almost all have offset spawn locations when loading the next map, with the basement stairs being the worst with a two block offset from the stair block, and the throne stairs always setting you at the left section of the stairs. You don't need to have the characters be offset from the maps when loading it.
Some time after my last report I had some fan editing come to mind about the MC's backstory: He is a part of a human clan that has an affinity to darkness, so much so that despite being loyal to the cause of humanity and elves, they are ostracized because of the Divines' and the Supreme Goddess' discriminatory views on the powers of darkness, possibly even having the church order semi frequent cullinges of the clan, while having them be of use to the royal family in prominent (though not directly important) places (i.e. spies and "shadow guards," anything that makes use of them, but not being openly recognized for their work by the populous) to keep them loyal, which would lead to the MC and the Princess forming a childhood friend kind of relationship through the small interactions they would have from him doing work at a young age in his clan. With the harsh treatment of the clan, the MC would have a growing resentment towards the Divines and Supreme Goddess for the unfair treatment of him and his clansmen, if the cullinges are a thing, you could add the sight of his family being among those that were killed further fueling his anger, though in training to control the powers of darkness, he would learn to bottle up these feelings. The Princess would not know about the harsh treatment of the MC's clan for most of her life, possibly finding out on her own due to her nature, which would lead her to empathize with the MC's bubbling vendetta to the Divines and the Supreme Goddess through their close relationship, possibly being a lynch to easily corrupt her. The affinity to darkness would be a more organic reason for the MC finding the journal than the heroes' party because of how close they are to the Divines blessings making them retardant to the "Aura of Darkness," and with his vendetta to the Divines and the Supreme Goddess he would be easily tempted into becoming the new Dark Lord, as it would mean giving him the power to change the world that has abated his clans suffering. Being from a clan of darkness users, the powers of the Dark Lord would flourish in him, being fertile ground for such power, and with him becoming the Dark Lord he would have lost much of his inhibitions that kept him from speaking his true feelings and powers of darkness that would flare up from such a release of everything he has been keeping hidden in his heart. This is just a fan opinion piece to give more depth to the MC than a sudden temptation to dominate and conquer, and have a more personal stake in wanting to conquer the world.