I feel kinda bad for Kouichi. He loses his OG home/universe, surprise arrange marriage and...

But he was given the chance to go back? And these “modifications” were requested?

Somehow, the “arranged marriage” was still in Kouichi’s favor. He didn’t ask to be there but he was given 30 days to choose to stay or go back with no problems. He chose to live in the Titan world (yk when he broke the thing that was taking him back home and when he rode Caius awake and told him to cum inside to make him officially his bride) It was his idea to make “modifications” to his body, he just wanted Caius to feel satisfied from sex too.

Pls the recap makes it sound so BL-typical

Sure kouichi chose to do these things, but it's always kouichi giving and the titan receiving. Sure it's against his culture, but the least the titan could do was do the modification instead. It won't be the first time a yaoi character broke tradition for love, so why not him?

Caius asked if he could have his body changed instead, but the elf said he didn’t know how to make his dick smaller and if they changed his sex drive that would put their citizens in danger. I would say they are both giving to each other equally. Caius almost died for kouichi’s happiness, he saves him countless times, and is shows obvious overwhelming love to kouichi (kouichi actually said “overwhelming love”) They are both very considered of each other, like when Kouichi was gonna stop trying to be in love with Caius because he thought the titan’s ex girlfriend was gonna be upset and then some. Caius building a whole basketball court for Kouichi. When Kouichi cried about being “shameful” because he was enjoying sex with Caius and didn’t want to disappoint him etc etc. When Kouichi told Caius that he was scared of Caius dying while he was outta it, Caius told him that he would die after Kouichi. Or even now, Kouichi breaking out of his comfort zone by having sex while being watch and learning magic all for Caius to be as equally satisfied in bed.