Popular Keyakizaka46 member Yurina Hirate was absent from the group's August 16 concert in Aichi.
An update on the group's official website explains that the idol is currently experiencing poor health.
Hirate's condition has plagued her since the beginning of the month. Keyakizaka46 started its nationwide tour on August 2 and 3. The idol did not fully participate in the concerts, including skipping the performance of the popular song "Silent Majority".
Netizens have also raised concerns about Hirate's condition following live broadcast appearances and social media updates in which the idol's voice seemed unwell.
Appearances by Hirate at future Keyakizaka46 concerts will be decided upon on a case by case basis.
Yurina Hirate is a 1st generation member of Keyakizaka46 who has served as the center of the group since its first single. She is widely considered the group's most popular and recognizable member.