This author has an older work called Ying/Ei and someone has recently uploaded it here! Please check that out too if you'd like. https://www.mangago.zone/read-manga/ying/
So happy sensei's older work is finally getting translated. Please read and support their new work 'Zaijian Countdown' as well!! Their art is so pretty. https://www.mangago.zone/read-manga/zaijian_countdown/
This author has an older work called Ying/Ei and someone has recently uploaded it here! Please check that out too if you'd like.
https://www.mangago.zone/read-manga/ying/