Hello Mikhail and welcome to the forum. Well my friend there are quite a few of us who have a great many memories of Micha'el - me of course being one of them, and just speaking for myself I have had both good and bad memories of him.
Well this is just a suggestion and not sure if you may have already done this but you might want to skim over the forum and read some of the older posts regarding Micha'el - and when you are ready share the memories or any info you have of him with us.
Micha'el had a huge impact on most of us here on the forum. I was one of the few who was closest to him and knew him very well. Take your time with this my friend, and know we are here to help you in any way we can and do our best to help you through any difficult memories that may resurface. Good luck.
Gabe