Luckily, I was able to get rid of that angel easily. He asked me a few questions.
Then, he confessed that he was having problems in his relationship with his wife. Apparently, she wasn't satisfied with him… maybe because he was too small. I don't know, that was just the funny explanation I came up with for myself.
Anyway, he was surprisingly open and just asked for some advice. And, despite being quite afraid of saying something wrong, I gave him advice.
In return, he also gave me a piece of advice: die. More specifically, he said I had the potential to become an angel after death, and since the flow of history didn't seem very positive for me, he recommended suicide.
I respectfully declined the offer.
By the way, he also healed all my injuries. He simply touched the center of my chest, and all my fatigue disappeared. I felt more energized than ever.