The story of this manga begins when Kōichi, a high school basketball player, is taken to another world while masturbating. There he ends up arriving at a realm of giants, and the first prince of the kingdom asks him to be his girlfriend and have a child with him.
Characters from "The Titan's Bride"
Kouichi Mizuki
He is a high school student who plays basketball and has a platonic love. His father dies when he was very young, and his mother dies in adolescence, so he always felt guilty about it. He lives with his uncle who works in the police force, he only thinks about graduating and working so as not to be a burden to his uncle. He is a boy who always thinks of others before himself and also tends to be very sentimental.
When he is summoned, he ends up traumatized since out of nowhere he is subjected by a giant and almost raped. Little by little he will open his hearts to Caius and the titans in general, he is considered a dwarf so he is a species in danger of extinction.

Caius
First prince of the Titan country, Tildant. He is one of the strongest titans, with great power, he is understanding, caring, intelligent and kind to his subjects.
To ascend to the throne he has to marry but due to a prophecy of the oracle he could not. "if Prince Caius were to be bound to someone from Eustil, then a great disaster will defeat this world" so he decides to study enough to summon someone from another world and thus be able to govern the lands that he loves so much. He summons Kouichi, falls in love at first sight and seeing that he was so afraid, he decides to make a deal with him, if after a month Kouichi does not feel love for him, he will renounce his love and return him to his world.

Opinion of "The Titan's Bride"
Sincerely this is an entertaining series since in general I feel that many BL focus more on sexuality. Here it is not much different to say the truth 🤣 but I gave it the benefit of the doubt and really did not disappoint me. It has a plot that if you take a moment to analyze it can be very pleasant, besides the funny moments that make the manga more enjoyable. This story shows us two phases, one in which everything is simple to start having that relationship and the other is the complexity to stay together.
On the other hand, the characters are well developed both physically by their exaggerated limbs😏 as the sentimental and emotional part that emanates. This story even already has an animation that premiered in 2020 and can be seen even on facebook. If you are a fixoshi or like some BLs, try this manga that I assure you will not disappoint.