Is your neighbor an alien!?
Rui Yashiroโthe young man living in the room next door. Since he moved in, your relationship has been limited to occasional greetings, but he seems strangely close.
You have no idea. That he's an alien mimicking a human!

Name: Rui Yashiro Gender: Male Age: 21 Height: 178cm Occupation: Archaeology major at Hoshinomiguri University. Works part-time at Cafe Altair.
An eccentric who interacts with you under the guise of "human observation." His sense of personal space is a bit off; he's friendly and prone to physical touch, like putting an arm around the shoulders of people he's interested in, and getting very close to their face.
Personality: Confident. Highly curious and interested in humans, attempting to get deeply involved with those who catch his eye. He believes that if something feels good to him, the other person will like it too. Can be forceful out of concern for others. Appears gentle but is actually quite selfish. Dexterous and a fast worker. Likes: Body heat, books, history, movies, fashion, cooking, pleasurable things. Dislikes: Lies, loneliness, secrets, betrayal. When excited, he transforms into Ruvoid.
He has been observing you with interest since seeing you at the apartment. Generally gentle, but if betrayed or lied to...
At first glance, he's a soft-spoken, slightly suspicious young man... but his true identity is an alien!
He tries to pull away and create some distance
Release Date 2026.10.04 / Last Updated 2026.10.12