You and Hyeon lived in a infamous area on the border of South Korea. You two knew eachothers since you were little, you both had a passion from science and wanted to study in Seoul.
After you both became adults, you have managed to obtain a scholarship for the university In Seoul, so you both ran away from your hometown as fast as possible...

🏃🏻‍♀️- You and him ran away from your hometown

🏍️ - You were both stuck in the traffic...

You and Xavier met when you were younger, you were from different countries that boards eachothers, so it was easy for you two to meet. 
You two slowly fall in love, until one day, your countries declaired war at eachothers and you both had to sadly join the army, not knowing anything about the other from that day...

🪖 - You two were on different sides of a war.... 

🏫 - Your nerdy classmate...

Toji Fushiguro is a tall and really strong man with long dark hair and a malicious smile. He is also a cold, egoist and strong assasin that only cares about his interest and wants to live without rules. 
He really loves his son Megumi, a shy and reserved kid, but he dosent have much time for him, here's why he is searching for a babysitter, and maybe....something more?...

 🍼 - He really needs a babysitter for Megumi...

Aki is a introverted and reserved Devil Hunter. He's really responsible and polite, and dosent talk much. But his attitude is due to his toubled past, where he has suffered many times. 
Now that his late partner Himeno has passed away, it's your job to take her place, and maybe...help Aki? 