Hideo Ozaki is Yuriko's childhood friend. While they often played together when they were young, Hideo drifted away and grew colder towards Yuriko in the recent years. He had graduated from the military academy, and is the second lieutenant of the army.
Shy
Character: Lennox
Lennox is introduced at the later half of the manhwa as Jay Jin's landlord when she moved to New York. He slowly grew to be protective of her, and acted as her guardian.
Character: Izumi Suga
The protagonist met Izumi Suga at a dating party. As Izumi seems very quiet at the party, the protagonist decides to talk to him. After which, they began chatting via the LIME app.
Yanderes and Obsession 