Because the bank’s internal audit cannot find Hanzawa at fault (technically, he followed procedure), they do not fire him. Instead, they impose the cruelest penalty in Japanese banking:
The premiere of Hanzawa Naoki (2013) initiates a high-stakes corporate drama where loan officer Hanzawa Naoki is framed for a failed 500 million yen loan by his branch manager, prompting his vow to "pay back" corporate injustices twofold. The episode, highlighted by Sakai Masato’s intense performance, establishes a thrilling, high-stakes battle against corrupt, bureaucratic structures within a major bank. Read a detailed review and recap at Shikidrama Naoki Hanzawa Season 2_Baiduwiki Hanzawa Naoki Episode 1
This is where the keyword becomes legendary. Hanzawa is called to Tokyo Central Bank’s headquarters. There, in a hushed, intimidating room, the bank’s director informs him of the punishment. Because the bank’s internal audit cannot find Hanzawa