I learned this day after I had met Katya.
In the morning, I went out with Maya-san for a walk.
Then I walked to a convenient store and bought a cake and a pack of salad to prepare breakfast for Katya.
I kissed Katya happy celebration and left home.
In the evening, my ex-adviser of my PhD degree gave his retirement lecture. I went to the university in a suburb of Tokyo (he moved to a different university from mine) by train.
We had a small tea party and his lecture started in a lecture room. I sat down in a front seat like a student. His lecture was OK.
On the way back home, I ordered a good pizza for dinner because I was not able to cook dinner. I bought a bouquet of mimosas and some cookies.
Katya came back home from her work and waited for me; unfortunately for Katya, it is not a holiday in Japan.
We celebrated the holiday together.
Unfortunately, I was not able to find my camera. I wonder where it is.