My Lucky Charm!!
"Joy" is the meaning of the first kanji character in my name and "Shine" is the meaning of the second kanji character in my name,
my parents chose the favorite name from the names suggested by the Seimei Shrine in Kyoto.
So, "Diary of Joy and Shine" means "Diary of Me"!! lol
I was born in Kyoto with South Korean nationality, which gave me two surnames at birth.
After obtaining Japanese nationality, I began to use only my Japanese surname in everyday life.
My first name is particularly special because, although it uses the same Kanji characters, it is pronounced differently in Korean (Hee Cheong) and Japanese (Yoshiharu).
This duality in pronunciation reflects my multicultural background.
English came later,
through study rather than upbringing. Somehow it became the language I default to at home, for reading, writing, games, and manga. Outside, in Kyoto, life carries on in Japanese.
In the most difficult time of my life, I started writing my diary online in the hope of making things better.
Since then, whenever I felt lonely in a distant place, I came here to alleviate the anxiety, whenever I was nervous before exams, I came here to encourage myself.
Over time, life brought me a variety of experiences.
During my school days, I worked as a programmer, released many programs, and my name appeared in several Japanese books and computer magazines.
This side job allowed me to pay the tuition at a private medical school.
Later on, in my fifth year of medical school,
I was approached by a technology company, just one year after I had started programming.
Although I was glad to receive the opportunity, I decided to continue my journey to becoming a doctor.
 (2007/02) |
 (2007/05) |

(2006/12)
It had only been a year since I started, and it had already gone further than I expected.
Medicine was what I studied.
Programming was the other thing, and at some point I
got certified.
In 2010, I was in charge of the medical room at
APEC (Asia-Pacific Economic Cooperation).
This diary is the place that holds a lot of good old memories from my school days, as well as the place that has brought me a lot of miracles.
I've been through a lot with this website since I was a student, so this is My Lucky Charm, so far and from now on.
<Medicine / Computer>
August 6, 2026 : Software That Outlives Its Runtime
October 22, 2021 : It's Me Who Should Say Thanks
August 7, 2019 : Since That Day
October 2, 2016 : Development of the Allowable Blood Loss Theory
September 14, 2016 : Blood Volume Estimation
September 11, 2016 : Body Surface Area Estimation
December 31, 2010 : Old Year 2010 and New Year 2011
June 3, 2007 : Software Development at Home
April 23, 2007 : Invitation to Apple Worldwide Developers Conference Again
February 2, 2007 : Request Email from Editorial Production Company
June 19, 2006 : Invitation to Apple Worldwide Developers Conference
October 24, 2005 : In the Midst of a Series of Final Exams, I Released the Awesome Image Viewer