Well, they might have a deep conversation about their different views on the world. Eren could try to convince Zeke of his more radical approach to saving the Eldians, while Zeke might push back with his own ideas of euthanasia for the Eldians. It could be a very tense encounter.
They could start to plan a strategy to deal with the Marleyans together. Since both have their own experiences with Marley, they might come up with a complex plan involving Titan powers and political manipulation. For example, using Zeke's position as a Marleyan weapon and Eren's influence within Paradis.
There were a few novels that could be recommended. One of them was " Nirvana Rebirth: The AdorkablePrincess Wants Candies." The protagonist wanted to eat candy the first time they met, and the plot was very sweet. The other book was " You're Not as Bright as I Am ". The first time the male and female leads met was during an internship. The female lead grabbed the male lead's wrist and refused to let go. The male lead refused the female lead's invitation, but in the end, he sent the female lead home. The other book was " The Conquest Game: A Beautiful Wife Is Hard to Tame." The male and female protagonists met for the first time in a bar, and the male protagonist mistakenly thought that the female protagonist was a lady. The second time they met was on the racing track. These novels all have different plots and backgrounds. I hope you can choose a novel that you like according to your preferences.
In fanfiction, when Eren meets Levi in the underground, they might initially have a tense encounter. Levi could be suspicious of Eren's motives. For example, he might question Eren's presence there as the underground is a dangerous and lawless place. Eren, on the other hand, could be in awe of Levi's skills and reputation.
I recommend the novel," Meeting You at the Coffee Shop." The male lead was a gentle coffee shop owner, and the female lead was a cute sophomore. The male protagonist met the female protagonist for the first time when he was working in a coffee shop. He was attracted by her innocence and hard work. As time passed, the female lead gradually grew up under the care of the male lead, and the relationship between the two continued to heat up. I hope you will like this novel.
"Encountering Light" was an interlude from the TV series "The First Time I Love You". This song was sung by Jia Yi and was included in the album Encountering Light. It was also the opening song of the show. The song was 03 minutes and 26 seconds long. It was part of the original sound track of Jia Yi's 2022 album,"The First Time I Love You." If you are interested in this song, you can listen to it or download it from Netease Cloud Music.