In the announcement, it was mentioned that Tsuyoshi had hoped to make a complete recovery as soon as possible in order to appear in front of the fans when he gets well. However, due to his current condition, it is deemed that he cannot be expected to deliver a perfect performance thus the difficult decision for him to skip the concerts had to be made. The agency also apologised to fans who had been eagerly anticipating these concerts and announced measures for fans who wished to seek a refund on their concert tickets.
Tsuyoshi was hospitalised between 27 June and 4 July and skipped two live appearances on TV music shows during this period due to his illness.
Sources: Nikkansports / Yomiuri Hochi