All the Shindan Way's elites didn't feel ashamed about it at all. To them, everything would be fine as long as Souichiro had enough power whether it was gained through an external means or otherwise.
In the Island Nation's martial arts community, power was everything. No one cared how you got that power. The end justified the means.
At this time, they were all expecting that Souichiro could avenge Akio.
When Leighton heard what the Shindan Way's higher-ups had to say, his eyes widened in real