So does Gokotai have any connection to Yamaguchi Tamon?
Gokotai is being reminded of his former master Kenshin Uesagi who was widely regarded as the reborn god of war, Bishamonten. Bishamonten's other name was Tamonten. Since Admiral Yamaguchi's name is Tamon, it is reminding Gokotai of Kenshin. The Japanese kanji for Tamon is the same as 'Tamon'Ten (ie Bishamonten)
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Tamon...-sanYou're Tamon-san?My former Master Kenshin was the reborn Tamonten,Oh, um, well,Rear Admiral Yamaguchi Tamon, Imperial Japanese NavyHow mysterious fate is for such a fortuitous meeting....I inherited you