Eigetsu does not like to consume alcohol or even smell it, because it literally turns him into another person: , who is brash, arrogant, and an excellent fighter. In contrast to Eigetsu's gentle manner and academic inclinations, Yōgetsu's intelligence leans towards being calculating and strategic. When Eigetsu first arrives in the capital, Yougetsu takes over; after winning a drinking contest in the Red Light District, he beats up three gang members, steals their money, and spends most of it on premium sake. Although he often refers to Eigetsu as a dim-witted fool, he also looks out for him. Thinking that Eigetsu might lose the Exam Token in all the commotion, he gives it for safekeeping to the sake merchant and tells him to deliver it with the expensive sake to the best brothel in the city. Before passing out, Yougetsu also tells Shūei Ran to take him to the same destination, which is how Eigetsu ended up in Kogaro.