He was hiding the fact that he was an illegitimate child.

The Venus flytrap is a very unusual plant that preys on insects.

He behaved as if possessed by a demon.

For now, please give me a cup of coffee.

He often takes things out of context to steer the conversation in a way that suits him.

His father died of Creutzfeldt-Jakob disease.

He is an expert in psychiatry.

His father was diagnosed with schizophrenia in the past.

He was diagnosed with glycogenosis.

It seems that he is suffering from chuunibyou.