Headscratchers / Koishi Komeiji's Heart-Throbbing Adventure

• How exactly can there be 30'000 kaijus in the series, if most of the characters (reisen, rinnosukke, iku, cirno, etc) died in gensokyo before being exposed to the moon (except Star) as well some unfortunate humans that died in the catastrophe, not to mention the rest of the characters that got introduced AFTER Lo LK (sumireko included?) such as H Si FS, Ao CF, etc? Specially since there's only 195 countries and about 10'000 cities in the world?
  • Youkai have a very high regeneration, so they are only killed temporarily when in Gensokyo (with a few exceptions probably, like half-youkai Rinnosuke). The same doesn't hold true outside of it, likely because of the fading believe at the outside world/Earth that canonically led to the creation of Gensokyo.
• How can Yoshika turns insane and becomes a Kaiju creature when she does not even have a sense of self? She is a Jiang Shi, a normal human who died then got revived and controlled by Seiga Kaku. If Seiga loses control over Yoshika either by death or insanity, isn't Yoshika supposed to drop dead and decompose?
  • If Yoshika died, then that's it. But who's to say that she would fall under new management? (aka, Neither Toyohime or Koakuma, likely, due to Koa absorbing most of the characters' abilities after they kicked the bucket. But if Seiga died (or turned into a Space Kaiju, and then died), Koa would have use of Yoshika, just to kill more people for the funsies.
• Remember that in episode 19/1 it said that thanks to the lunarians they have manage to forget all wars and conflicts for them to go on an age of peace? Yeah, that was 40 years ago, if we count that that's was the time Koishi decended towards earth and manage to found her various husks before setting in with the one made by Toyohime's, it's leads us to the 1980s. So 1980's + 40 years = 2020s. What about the Massacre Koishi did by killing roughly like 70 peoples on the streets during her times having a new body? Or the fact that Sanae had manage to burndown Various bullies that had bullied her as well her parents?! Did the lunarians somehow manage to make people forget about those details? As well, speaking of deaths: HOW MANY PEOPLE WOULD HAVE STILL BE ON EARTH THANKS TO WARS NO LONGER BEING A THING?! heck, how about personal problems like SUICIDE!? Would the Lunarians somehow manage to erase ALL negativity on humanity for the great scheme of things? and coming back to the first question, the population on the earth in 1980 was of 4,458,003,514-5,237,441,558 and in the 2020's the population has reached 7,794,798,739 (at least in our world). But that happened thanks to various factors like death and new births (making the earth more smaller and cramper). But if the Lunarians have managed to atleast make us forget of violence and death, then the earth in that world would have gave us a much more BIGGER number than what we have.