Before reincarnating to this fantasy world, Shin Walford is a hardworker employee back in his original world until he got hit by a truck. Reincarnating as a baby in the fantasy world, Shin's real family in said world were murdered by some monsters during their travel in the forest. Fortunately, Shin was adopted by an old wanderer who reveals himself to Merlin Walford, one of the Living Legends from Earlshide Kingdom who defeated a rampaging demon back then.
As Shin grew up to be a great young boy due to both Merlin and his wife, Melinda, treat Shin very well until his 15th birthday, Shin learns all kinds of powerful magic from his grandfather and seemingly mastering some pretty powerful spells by himself to the point he even surpasses his grandfather.
But there are two things that Merlin forgot to teach: "Common sense and Social Skills" so that Shin could adapt to the society pretty nicely. Fortunately, Merlin's friend, King Diseum von Earlshide, enrolls Shin into a prestigious magic academy not only for learning how Shin's skills is different compared to other magic users, but also to make Shin fitting into society and make more friends. And so starts Shin's unconventional other world fantasy life.
The Wise Grandsonnote (賢者の孫 Kenja no Mago) is a currently ongoing Light Novel from 2015 and Manga written by Tsuyoshi Yoshioka while having two different illustrators as the Light Novel is illustrated by Seiji Kikuchi while the manga itself is illustrated by Shunsuke Ogata. An anime adaptation will be broadcast in April 10, 2019.
Tropes for this series
- Aerith and Bob: Shin, the reincarnating protagonist, who is surrounded by more of a medieval fantasy world where just about everyone has more western and exotic names. His adoptive grandfather, by comparison? Merlin.
- Asshole Victim: Kurt is a snobby elitist who's introduction is shown by him attempting to shove Shin out of the way to look at a bulletin board. He then continues to get angrier as Shin continues to embarrass him by getting a much higher score, and protecting Sicily against his unwanted advances. He's later killed by Shin after he's demonized and tried to blow up the school.
- Bears Are Bad News: Merlin takes Shin out demon hunting when he's 10 years old. However, Shin acts so quickly that he's unable to assist, and his classmates are in shock that he killed one already, even though he didn't think it was such a big deal.
- Berserk Button: Played for laughs, as Shin seemingly dislikes his shoulder getting patted by someone else. Played straight whenever Sicily being put in danger.
- Beta Couple: A whole bunch of them, which is really rare for this sort of LNs. The first introduced is between Mark Bean and Olivia Stone, with subtle allusions their relationship is sexually active. The second revealed is between August von Earlshide and Elizabeth von Coral, who were royally betrothed from childhood.
- Cool Old Guy: Merlin, who was one of the first people to take down a demonized human who had wreaked havoc on a town and killed lots of people before he arrived.
- The Corruptor: Kurt was a self-confident but otherwise normal student until he met Professor Strohm. Whether his new attitude stemmed from an impressionable mind, magical manipulation or a combination of the two, it becomes fairly obvious that Kurt was deliberately moulded into the kind of person we meet in the story.
- Dandere: Sicily von Claude is a rather shy and timid girl who is rather soft-spoken and polite towards other people. She also goes on an outburst when it comes to embarrassing situations.
- Demon of Human Origin: Humans with magic ability become demons when they go berserk, individual who already a demon like Oliver Strom can also turn others into one as well, like what he did to Kurt.
- Downer Beginning: Much like some Isekai protagonists, Shin was hit by a truck while home from work back on his original homeworld. When got reincarnated, his new family was massacred by the monsters. Fortunately, an old wanderer named Merlin adopted him and raised him as a son.
- Full-Circle Revolution: The once corrupt Bluesphere Empire is now ruled by demons born from its formerly oppressed commoners.
- Grumpy Old Man: A female version. Melinda Bowen often nags if Shin does something careless.
- Happily Adopted: Shin is truly happy when he gets adopted as a grandson of Merlin Walford, despite his grandfather telling him the truth: that he is adopted and his parents were killed. This is due to both his adoptive grandfather and grandmother taking good care of him.
- Hair-Trigger Temper: Melinda mostly nags a lot because of either Shin or Merlin's carelessness.
- Knight of Cerebus: The emergence of the Demon nation. It completely flips the entire world's priorities on their heads when they aren't facing conflict among themselves and immediately shifts the tone of the storyline into something much, much darker.
- Living Legends: Both Merlin Walford and his wife Melinda Bowen were hailed as the legendary heroes of Earlshide Kingdom after they defeated a legendary demon in the past and are still living today as Shin's adoptive grandparents.
- Look Both Ways: Before reincarnating in a fantasy world and being adopted by Merlin, Shin died after he got hit by a truck in his original world.
- Loophole Abuse: Shin is told that he's not allowed to change the enchantments on his school uniform. When he asks if it was okay if his grandmother Melinda did it instead, the instructor says it should be okay. Shin then goes about enchanting his uniform on his own, giving it some massive upgrades such as auto-healing. He does at least allow Melinda to check his handiwork afterwards, though she seems to approve of it.
- Nice Hat: Sicily von Claude
- Official Couple: Shin and Sicily are officially engaged by the end of vol. 2 of the novels.
- Off with His Head!: Shin does this to a demon bear, and later is forced to do this to a demonized Kurt.
- Overshadowed by Awesome: Shin compared to just about anyone else. During the school entrance exams, he's shocked by how weak the other student's spells are. When it's his turn, he tries to hold back, but basically destroys all the targets the other students barely scratched.
- Our Demons Are Different: Demons are creatures that lost control of their magic. While this mostly applies to animals, humans are not exempt from this, either.
- Politically Incorrect Villain: When Sicily rejects Kurt's engagement proposal, Kurt ends up snapping and calling her a whore while saying that women's only job is to obey and please their men.
- Rapunzel Hair: Maria von Messina and Sicily von Claude.
- Reasonable Authority Figure: Diseum von Earlshide is the current king of Earlshide Kingdom. He has a pretty relaxed personality towards Shin and sees him as his own nephew. He's also the person who enrolls Shin into the Magic Academy so that he can assess how different Shin is compared to other magically gifted people. It is also revealed that when Earlshide Kingdom were attacked by a demon in the past, Diseum tried his best to participate in the battle to reduce the casualties.
- Reincarnate In Another World: Shin dies in a truck accident before being reincarnated with his memories intact.
- Rescue Romance: Sicily falls in love with Shin after he saves her and Melissa from some Demon Hunters who were aggressively hitting on them.
- Royals Who Actually Do Something: When Kurt starts trying to throw his high social status around to boss or intimidate other students, Prince August shows up and reminds him that social standing has no sway in the school. And if Kurt really insisted on going that route, he would pull his rank as the prince to stop him.
- Sacrificed Basic Skill for Awesome Training: Shin's level of magical abilities is probably on par with his grandfather Merlin. However, due to lack of social interaction, partly due to Merlin never taking him into town early on, he lacks some basic socialization skills when he first interacts with others around his age.
- Schizo Tech: The world and technology level Shin is reborn in seems to be around the late Middle Ages. However, their uniforms and outfits wouldn't look out of place in a modern day setting.
- Secret Test of Character: When Shin offers to enchant Sicily's uniform to have much stronger protection in case she gets attacked by someone, Melinda, suspecting Sicily may be using him, starts asking her if she really feels worthy of it. The pressure gets to Sicily, causing her to break down in tears, saying she wasn't worthy of it. She tries to run out of the room, but is stopped by Melinda, who thanks her for her truthfulness, and tells her that had she truly of only wanted to use him, she would've kicked her out of the house.
- Shipper on Deck: Pretty much all their friends and families support Shin and Sicily together.
- Stalker with a Crush: Both Melissa and Sicily view Kurt von Ritzbug as one due to his crush on Sicily. Kurt tries to stalk Sicily so that she can become engaged to him.
- Starter Villain: Kurt unintentionally acts as one, acting rather rude and snobby towards Shin during their first encounter. His anger towards Shin is later exploited, turning him into a demon in the process.
- Start My Own: The other S class students in Shin's class suggest they start a club to master various different magic on par with his. Their teacher even offers to step in as the adviser, which further excites them. The only one who isn't interested is Shin, which doesn't stop them from forming one anyway.
- These Hands Have Killed: Shin is visibly disturbed after he's forced to kill a demonized Kurt, who was otherwise going to use an explosion to take out at least half of the school.
- Wizarding School: The Earlshide Magic Academy. Diseum suggests Shin be enrolled here to learn about society, making friends, and knowing his difference to other magicians.
- You Gotta Have Blue Hair: Sicily von Claude is the only character in the main cast who has unique hair: it's colored blue.