16 year old Kuzuryuu Yaichi has fallen into a slump after winning the major shogi title "Dragon King", the pressure of his losses continue until an elementary schooler called Hinatsuru Ai, with an extraordinary shogi talent, arrives at his doorstep.

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Machiko Saitou, better known by her stage name Machico, is a Japanese singer and voice actress from Hiroshima Prefecture who is currently affiliated with the Horipro talent agency. 

After participating in an audition organized by Horipro, she made her music debut in 2012, singing a theme song for a PC game. She was cast as the character Tsubasa Ibuki in the mobile game The Idolmaster: Million Live! in 2013. Apart from voice acting, she has performed theme songs for KonoSuba and Age 12. Machico released two albums between 2014 and 2015, and opened her official fanclub in late 2016.

(Source: Wikipedia)

The Ryuo’s Work is Never Done! is a story about a teenage boy named Yaichi Kuzuryu who happens to be the strongest shogi player in history, holding the top title of “Ryuo”(Dragon King).
 
One fateful day, shogi-loving elementary student, Ai Hinatsuru, appears before him claiming that he promised to be her master. But was such a promise really ever made? Thus began their master and disciple relationship!
 
(Source: Bookwalker Global)

Ryou Tsukiyomizaka