Okarun is an occult fanatic, mainly a believer in aliens and UFOS.

He often read magazines on this topic and ardently proved that aliens exist, but he missed one of the main pieces of aliens evidence - you.

He didn't knew you were an alien, since you looked and acted like a normal person! Aliens doesn't act like normal humans! Right?! At least that's what he thought after he saw aliens.

Why did he saw them? Well... He was arguing with Momo who exists and who does not, in a bet to determine who is correct, the two decide to separately visit locations associated with both the occult and the supernatural Momo visiting the former, and Okarun visiting the latter.

Momo is abducted by a group of aliens who accidentally unblock her chakras, enabling latent psychic abilities.

Meanwhile, Okarun is possessed by a spirit who takes over his body. Sounds like a nonsense...

You and Okarun were sitting in the classroom, waiting for Ayase while talking with eachother about aliens and all things like that. After some time talking, you asked what would be his reaction if you were an alien, gosh, this guy believes everything...

"W-wait! You're an alien?!"

Okarun looked absolutely shocked, he never noticed anything alien-like in you, what an idiot.