I would like to thank all the iTHEMS members and iTHEMS supporting staff for your great efforts to keep iTHEMS very active during FY2020 even under the Covid-19. Our iTHEMS mission is very simple. Good science under the environment of interdisciplinary interactions: "A+B --> A*, A+ B --> B*, A+B --> C" are all in line with this mission. We will have many newcomers joining iTHEMS from FY2021, and let us keep moving forward without boundaries.

Now, I would like to congratulate the two iTHEMS students: Toshihiro Ota (student trainee from Osaka Univ.) and Keisuke Fujii (student trainee from Tokyo Institute of Technology) who successfully defended their Ph.D. and are going to graduate from their Universities and from iTHEMS. I hope you have enjoyed your stay in iTHEMS and let us keep in touch for further interactions.

Last but not the least, I would like to thank our assistant Izumi Nagasawa who has made tremendous support for the web page, seminars, colloquiums etc and is leaving iTHEMS at the end of this March. Although we could not see her so frequently in person under Covid-19 situation, she has been really helping our activities from behind. We send her our heartfelt gratitude.

Takumi Doi (Senior Research Scientist, iTHEMS) received "FY2020 Researcher Incentive Award" on March 17, 2021 for his recent paper; Possible lightest Ξ Hypernucleus with Modern ΞN Interactions, published in Phys. Rev. Lett. 124, 092501(1-5) (2020), and related works. Congratulations !

Masaomi Ono (Research Scientist, iTHEMS) received "FY2020 Researcher Incentive Award" on March 17, 2021 for his recent paper; Matter Mixing in Aspherical Core-collapse Supernovae: Three-dimensional Simulations with Single-Star and Binary Merger Progenitor Models for SN 1987A, published in The Astrophysical Journal, 888, 111 (2020), and related works. Congratulations !

At the National Museum of Emerging Science and Innovation (Miraikan) located in Tokyo, iTHEMS exhibition of "Black Hole Recorder" was held last week (March 14-15, March 17-21).

Details of this outreach activity (Black Hole Recorder) and the general concept behind (UselessPrototyping Studio) can be seen from the URLs below.

On 24th March, Dr. Akinori Tanaka gave an introduction to the reinforcement learning (RL) in our journal club of the Information Theory Study Group. He started from simple examples of a maze and a chess game to introduce the fundamental variables (i.e., states, actions, and rewards) and their evolution as a Markov decision process.After explaining that the goal of the RL is to maximize the value function, he discussed policy improvement theorem with the application to the epsilon-greedy update. We thank Akinori for the great and clear talk!