Two male protagonists, two clean characters, same-sex marriageable, an imaginary time and space.
One party can choose the gender, love at first sight.
Yu Fei and Tian Tian met in the youth class and met on the battlefield. Tian Tian used blood to save Yu Fei, and the two secretly fell in love. Yu Fei secretly protects Tian Tianxue's secret. This allowed Tian Tian to devote herself to solving marine nuclear pollution through experiments on her own blood without any distractions.
