Not that Rin. Sorry.

Close but not exactly, this will be explained in the future.

Well, the mc Shirou desires and mental state very different from OG Shirou, so I wanted to change chant for UBW a bit. So the first line became "I am the core of all swords"

No. Maybe in future.

Sorry my schedule is still crowded so updates will still be irregular.

Maybe, just like when objects emits a type of radiation, each universe also emits a specific type of radiation. These waves can be received by special people who can resonate with it.

This can make authors angry. I think they would like to think that this world was created by them.

Yes, I do. So what

Sorry there is a mistake here. It should have been 2nd war ended.

Sage of 6 paths.... you f**ked up

No, I have been very busy with studies. There is no time to write.

Maybe he travelled to the past and wrote it.

Not for sometime. MC is currently focused on survival.

I don't think so. He was still turning his nerves into makeshift magic circuits at the time. So people would have noticed Shirou in pain if he had used magecraft.

Do shirou's heaven's feel normal ending.

He didn't pick Shirou. His reincarnation process choose it for him when it scanned his soul.As for Shirou being a slave to his ideals. From another perspective Shirou himself chose to follow his ideals for the beautiful dream of his father where everyone can be happy. He choose this life.We humans all want to choose a way of life we like, that is our freedom. But this also means we become a slave to that way of life.

This is an interesting question. One I thought about a lot. Looking at the series Archer never seemed to have developed this type of skill in his life.We can only try to guess the answers as Shirou's storylines never mentioned learning the concept of breathing and walking. Only caster's master Kuzuki seems to have a little bit of proficiency in this type of skill.As for the reasons, there are some I can think of. Having sword as origin does not mean that the person would have godly talent as a swordsman. It means that his urge or instinct or instinctive action that comes from their consciousness or soul will be that of a sword. This means he or she will likely find themselves drawn to combat, to be used by someone until broken. Shirou/Archer is drawn to combat, Archer was used for the sake of others until he was broken.A warrior is guardian specializing in combat/warfare. They are who uses weapons like swords. They train and improve their skills overtime. They take pride in their abilities, their roles, their ideals and beliefs.Shirou never takes pride in anything he does. Everything he does is so that someone else can be saved even at the cost of his own life. To Shirou strength is all about having just enough power to save everyone.Shirou does not have godly talent as a swordsman simply because his affinity is sword.Shirou could develop skills like Sasaki's Noble phantasm or Okita by training just like they did. But he would need to trace their swords to learn the method. Also spend time mastering the technique.As for other similar techniques they are kept in exetreme secrecy by the respective holders.Considering Shirou and Archers thought process, instead of wasting a lot of time practicing such a skill if they manage to even find one, they would rather stick to abilities that they can master more quickly so that they can save as many people as they can.Note - Having origin sword does not mean that Shirou will ultimately be used and discarded as a weapon. It is simply an instinctive guidence born from their soul's starting point from the root. He can Shirou how to live his life. Following their origin is simply a choice in the end. Because Shirou is a human being at the end of the day.This is proven at the Heaven's feel true ending when Shirou realises that despite everything that happened to him, he wants to live when Illya comes to save him by sacrificing herself.

Why stop there? Add the witcherverse, elder scrolls, dragon age as well.

No, he had already memorised it before the test.

Yeah, I guess both worlds have world ending threats. Different people have different perspectives so we can't accurately judge which world is more dangerous.