Hehe!I like it!
But Polish refferences in anime/culture are not so strange at all!There's an anime about Polish Monk who were helping japanese kids after II World War-the title of anime is "Boundless love".He's name was Zenon and he received nickname "Zeno" in Japan.By some confidence,my mother knew him.She told that he was allways happy and influenced others with posotive vibrations :)I heard that people who live in Nagasaki and were under his cusody are really thankful to him. He and other monks (mostly they came from Poland) estabilished an monastery under invocation of St.Francis in Nagasaki which exist till today.
But Zeno died 8 years ago...
And the second thing I spoted in japanese production was in game...Metal Gear Solid 3.Talk to Eva some times in Preschera Cave,and maybe you will hear her tale about polish solders who died during 2nd World War by massacre in Katyn-Russland.