It centers around the relationship between Ordinary Highschool Student Kōichi Mizuki and the giant prince Caius Lao Vistaille, who has summoned Kōichi to his world to be his bride and bear his children.
As future ruler of Tildant, it was Caius's duty to wed a fertile bride and provide the kingdom with an heir. However, when an oracle prophesied that great misfortune would befall the country if Caius ever were to marry a resident of his world, his original marriage was cancelled. Caius searched day and night for an old ritual that would allow him to summon a being from another world to be his bride, so he could have both the throne and his love.
Kōichi Mizuki is in his third year of highschool and envied by his classmates for his good looks, athleticism and tall stature. One day, while in the middle of masturbating, he's suddenly transported to another world and approached by a handsome giant who calls him his wife.
The manga has 53 chapters at the time of this writing.
On March 18, 2020, it was announced that the series would be adopted into a television anime by Studio Hōkiboshi and Comet Company. The first trailer was released on June 19, 2020, with the anime premiering on July 5, 2020.A censored version of the anime, cutting out all the sexually-explicit content, was broadcast on Tokyo MX, Youtube and NicoNico, while a non-censored version can be watched on the digital distribution platform ComicFesta Anime.
The Titan's Bride provides examples of:
- The Ace: Koichi. In his own world he was a star athlete, the captain of the basketball club and immensely popular with the ladies.
- All-Loving Hero: Koichi is a very kind young man, who can't stand the thought of causing others trouble. In chapter 22 he stops Caius from killing Palo (who had previously kidnapped and raped him) because he finds the thought of someone having gotten in trouble or even dying because of him unbearable.
- Ambiguously Brown: The giants all have a noticeably tan skin-tone compared to Koichi. Koichi immediately recognizes Caius as a foreigner based on that alone.
- Beastman: The country of Forbas is made up entirely of bipedal, anthropomorphic animals who are capable of speech and just as intelligent as the other races.
- Bowdlerize: Even the uncensored version of the anime cuts out a lot of the lewd stuff present in the manga.
- The manga had a scene of Koichi's underclassman pulling down his pants to complain about how big Koichi is compared to him. This got cut out of the anime entirely and is instead replaced with a segment showing Koichi and his team playing basketball.
- In the manga, Koichi is transported to Tildant while on A Date with Rosie Palms. Right into the middle of a crowd. Caius even makes a point of commenting on how small Koichi is and how cute he finds it. In the anime, Koichi is just lying on his bed when he gets transported and it's just Caius who greets him when he arrives.
- The anime cut out the rather suggestive massage Caius gives Koichi in chapter 4 and 5 of the manga. Oh, and the sex that happened after.
- Dark-Skinned Blond: All of the titans have blond hair and brown skin.
- "Do It Yourself" Theme Tune: The English version's opening song is performed by Edward A. Mendoza (Koichi) and Kiba Walker (Caius).
- Gentle Giant: Caius is ginormous and intimidating, but he's a kind man with a big heart who would never intentionally hurt Koichi.
- Intimate Marks: Koichi gains one of these after deciding to stay with Caius and let his homeworld erase him from existence, marking him as Caius' true bride. In chapter 53, it's revleade that this mark will allow Koichi to tap into Caius' magic to use as his own.
- Loop Hole Abuse: The Oracle stated that Caius could never marry someone from Eustil. So he summons someone from another world to be his bride.
- Love at First Sight: Caius is instantly smitten with Koichi upon his arrival.
- Love Triangle: Seems to be set up with the arrival of Medina, Caius original bride-to-be. She acts incredibly antagonistic towards Koichi and it's heavily implied she still has feelings for Caius. It's completely subverted by chapter 9. As it turns out, Caius' sister noticed Koichi wasn't feeling quite certain about the wedding and intentionally called Medina over to make Koichi jealous.
- Mistaken for Subculture: Koichi is frequently mistaken to be a dwarf by other characters since he looks too old to be a child Titan.
- Non-Heteronormative Society: Eustil is pretty open about same-sex relationships, since the three different races are already pretty diverse. As Caius puts it, as a giant and a human, their races are already different, so gender is even less important.
- Official Couple: Caius and Koichi are the manga's main couple. Heck, the series starts with them getting engaged, though only one of them knew of it beforehand.
- One Head Taller: Try several heads taller. Caius positively towers over Koichi, despite Koichi being 5'11" (180 cm). Justified, since Caius is a giant (8'2" / 250 cm).
- Our Elves Are Different: Elves in Eustil represent the trait curiosity and are known for being great scholars and scientists.
- Our Giants Are Different: The giants of Tildant look exactly like humans, only much bigger. They're a society based around the concept of prosperity: they farm, build, create art and encourage open love and, if possible, multiplying.
- Reality Ensues: Since Caius is a literal giant, it stands to reason that his... equipment would be just as massive. Koichi is terrified when he sees just how big it is and cries at the thought of having to take all of that in. Both Caius and Koichi seek out a member of the Long-Ear Tribe to see if there is a way to shrink Caius' size so that he can fit completely inside Koichi. Alternatively, after learning Koichi can tap in to Caius' magic, he could utilize magic to increase his capacity.
- Ret-Gone: Due to how summoning magic works in Eustil, the circumstances of Koichi's presence ends up poking a hole in the dimensional "wall" between his home world and Eustil that keeps the worlds separate and stable. It takes one month for it to repair itself, but it also means he would need to make a very important decision: leave Caius behind and return home, or form a contract that would also essentially rewrite history to where Koichi never existed back in his original home. He heavily considered going back home due to his sentimental ties with his mother and classmates, but ultimately stays with Caius.
- Running Gag: Koichi being so much smaller than his fiancé and the residents of Tildant is a frequent source of comedy.
- Second Love: Caius was engaged to Medina before the Oracle had their marriage contract revoked and he loved her just as much as he claims to love Koichi now.
- Token Human: Humans do not exist in Tildant. Koichi is the only member of his race to live there.
- Trapped in Another World: Koichi, an Ordinary Highschool Student, is transported into the mystic world of Eustil.
- Unlucky Childhood Friend: Medina was friends with Caius from early childhood and truly loved him. However, they were forced to separate after the Oracle's prophecy. Slightly subverted as Chapter 9 reveals she eventually got over him and found a new fiancé.
- Wolfman: Palo is one of the anthropomorphic variety.