Today's topic of Hatena Diary is "Setsubun". Setsubun is Japanese custom, and we pray our peace and health.

I feel muscle ache on my legs. Perhaps, yesterday I was walking in WWTP in Osaka prefecture, which had 4 floors below ground. I went up and down stairs time and again. ... very tired. I need to do more exercises, for example running around…

Today, I had a hand-off meeting with core member of Young Engineer Committee in IPEJ. The meeting started at 7:00 pm, but I could not finish my work until 8:45 pm. So I was more than two hours late. At the meeting, we discussed about manag…