Updated as of Volume 7 - 22 March 2023 - My thoughts are pretty much the same. Fixed some spelling. Definition of Generic Isekai: A male protagonist gets summoned/reincarnated into another world. He becomes overpowered and gets a harem of girls. Examples: Sword Art Online, How Not To Summon A Demon Lord, Death March To The Parallel World, etc. Now the question is: "Is Reborn To Master The Blade: From Hero-King To Extraordinary Squire a Generic Isekai?" The answer is No. It is a reincarnation but not an isekai. And the protagonist, Inglis does not want to become a hero. I will describe the synopsis.There is a man known as Inglis. He is blessed with a power known as Aether from a goddess. He eventually became the hero-king by founding a powerful country.

When the hero-king Inglis is about to die from his old age, the goddess came to visit him and asks him if he has any wishes. Hero-king Inglis replied that he has spent too much time dealing with politics and unable to spend time with swordsmanship. He wants to be able to become a master swordsman in his next life. The goddess grants him his wish and reincarnate him thousands of years later as a girl known as Inglis Euccus.

When Inglis Euccus is reincarnated as an infant girl, she noticed that humanity is constantly under attack by magical creatures known as magicite beasts.

Regarding magicite beasts, they are formed by prism powder falling on animal. Magicite beasts cannot be slain with normal medieval weapons, they can only be slain by artefacts. Artefacts can only be wielded by knights with a magic rune. However, artefacts can only be obtained from the highlanders, a group of elites who live on a floating island. To obtain the artefacts from the highlanders, humanity has to pay tributes to them regularly, such as food or human lives. There are times that countries pay tributes that the citizens start starving from food shortages.

There are other technology that are provided by the highlanders, one of them includes the Flygear, which is flying boat powered by magic, usually driven around by squires when fighting magicite beasts.

There is a very strong type of magicite beasts known as a prismer. Prismer can only be defeated by a knight with a spcial-type rune wielding a hierial menace. Knights with special-type runes, also known as holy knight, are very rare and are usually protected as a valuable asset. Hieral menace are live humans turned into a weapon by the highlanders.

There is a group of terrorists known as Steelbloods. Their objective is to rebel against the highlands. They have the prismer powder to turn highlanders into magicite beasts.

In summary, humanity has become slaves to the highlanders to obtain weapons from them to survive against magicite beasts.

Getting back on Inglis, Inglis is born as a daughter of a knight's captain. Her uncle is a duke. She has 2 cousins, Rafael and Rafinha. Rafael has a special class rune, which makes him a holy knight. Rafinha is the same age as Inglis, which makes them very close. Rafinha has a high-class rune and wields a bow. Inglis is runeless due to interference from her Aether. Since Inglis is runeless, she is unable to become a knight and could only serve as a squire. Hence, Inglis decides to become Rafinha's squire. She is fine with it since she only cares about fighting and not care about being a hero. Rafinha eventually enrolls into knight academy in the knight program while Inglis attends the same academy in the squire program.

Now to the characters:

Major characters (They are all nobles):
Inglis Euccus aka Chris. The protagonist of this LN. Inglis is a parody-sue, she is overpowered for comedic purposes (similar to Saitama from One Punch Man or Mob from Mob Psycho 100), destroying her opponents without runes, most of the time with her brute force (and Aether). Saitama cries when he missed out a sale, Inglis cries when she becomes hungry, she has a huge appetite. For her personality, she is Goku 2.0. She does not care about politics or becoming a hero. She wants to fight strong opponents such as herial menances, prismers and steelbloods. Inglis is currently enrolled in squire program to serve Rani's squire. Inglis is overprotective of Rani, treating her as her granddaughter. Remember I mentioned that she is parody-sue? How to get a Flygear, borrow one from the knights academy? Nope, loot it from the highlanders after they are defeated by the steelbloods. Magicite beast attack in the middle of a feast. Do I protect other people? Nope, protect the food! XD

Rafinha Bilford aka Rani. Cousin of Inglis. Rafinha has a high-class rune. She tends to use a bow. She eventually gains a bow artefact that could heal injuries. Like Inglis, she has a huge appetite for food. For her personality, she is very naive idealistic girl, similar of Historia from Attack On Titan or Lena from 86. She always insists to stop to help the weak or give food to the starving people. She frequently daydreams Inglis and her brother, Rafael, getting married. Her description of Inglis "Body of an angel with the soul of a warlord".

Leone Olfa. A friend of both Inglis and Rafinha, met during their journey to the knights academy. Her artefacts is a broadsword. She eventually gets a broadsword that can is able to send multiple people into another dimension similar to Kakashi/Obito Mangekyou Sharingan. She is an avenger, trying to kill her brother, as he is part of the steelbloods, not going to say too much as these are heavy spoilers for Volume 3.

Liselotte Arcia. She is the daughter of the chancellor. She uses a lance artefact. She could grow angel wings and fly. For her personality, she is very competitive, wants to compete with Inglis and becomes stronger. She starts off cold to Leone and they eventually gets better and become roommates.

Now for the other schoolmates:

Lahti. An exchange student in squire program. He is Inglis's classmate. He is very caring towards Pullum, another student in knight program. Not going to say much about him due to heavy spoilers in Volume 4/5.

Pullum. An exchange student from the same country as Lahti. Not going to say much due to heavy spoilers in Volume 5.

Yua. A upperclassman of Inglis. She is a runeless but she can fight off magicite beasts. Her ability is to merge with nature. Which gives her superhuman ability to destroy magicite beasts easily. For her personality, she is lazy and jealous of Inglis's physical appearance. She wants to find a boyfriend but Inglis tends to attract most of the boy's attention. She is another parody-sue. Overpowered for comedic purposes. Inglis likes to duel with her but Yua is not interested, unless there is a price such as a handsome guy~

Silva. An upperclassman of Rafinha. He has a special-class rune. He is close to Ripple. He feels that runeless squires are not supposed to be fighting magicite beasts due to a tragic past he experienced. Not going to say much as it it spoilers for Volume 3.

Now to the holy knights:

Rafael. Elder brother of Rafinha. He has a special-class rune. He is partnered with the herial meance Eris. He tends to looks out for Rafinha and Inglis.

Captain of Royal Guard (I forgot his name). He is the older brother of Silva. He serves directly under the king. He is a big fan of Inglis. He is willing to give his position for Inglis. He is always looking out for Inglis, kinda like a stalker. Inglis find him annoying.

Hieral Menaces:
NOTE: Every hieral menace specialises in using a weapon. They can only transform into that weapon.

Eris. She specialises in using a sword. Partnered with Rafael. She is very quiet but very caring. Eris finds Inglis weird as Inglis enjoys duelling with her.

Ripple. She specialies in guns. She intends to be partnered with Silva. She is very caring towards Silva. She is a demi-human and tends to attract demi-humans magicite beasts.

Well both hieral menaces are nice people.

Now to the Steelbloods:

Leader of the Steelbloods. His identity has not been revealed. But he has aether, jsut like Inglis. He is much stronger than Inglis. Inglis wants to duel with him.

Sistia. A hieral menace of the Steelbloods. Not sure how she joined the Steelbloods. She is aware of Inglis's strength after their duel. Oh, she specials in spears.

Leon Olfa. Older brother of Leone. He is still looking out for his sister's safety. He can summon electric monsters. He is not an evil man at all. The main reason he join the Steelbloods is revealed in Volume 5.

Next, for the Highlanders:

Cyrene. Inglis and Rafinha met her during their mercenary job. Cyrene is a nice character who looks after humans and Rafinha likes her. Cyrene eventually got turned into a magicite beast by the Steelbloods. The Steelbloods leader eventually turned her into a small creature. She is currently Inglis's pet.

Cyrene's brother (I forgot his name). Another nice highlander who wants to give humanity more technology to fend for themselves. Is grateful towards Inglis and Ranfinha for saving his sister.

The other highlanders are evil and treats humans as domestic animals. Not going into the rest of them as there are heavy spoilers.

That sums up the important characters.

Who do I recommend this Light Novel to?
1) People who likes superpower.
2) Parody-sue protagonist, Inglis is similar to Saitama or Mob.
3) Cute girls kicking ass. Mainly for people who are tired of overpowered male characters.

People who dislikes overpowered characters should avoid this Light Novel.

Be careful of the slow start of this light novel. It starts off as a very generic fantasy adventure fiction.

My overall thoughts?
What I like:
1) Great world-building. I like how humanity has become slaves to highlanders to survive against magicite beasts attacks.
2) Great Comedy. Inglis and Yua are hilarious.
3) Great Plot twists. A lot of plot twists after Volume 3. The story becomes very dark at the end of Volume 4.

What I dislike:
1) RAFINHA. She is so cliche with her sense of justice.
2) Character designs. I don't like oversized chests.
3) Slow start. It starts off as a very generic adventure/fantasy fiction.

Hence, I give it a 6/10. I had some laughs at it. Especially with Inglis's dialogues. I will continue to read the light novel and update this review. If you are interested, I hope you enjoy this light novel! :)