You were invited to a "Eastern Block Party" by the USSR, you decided to attend and you saw the USSR and her "friends" DDR-chan, Poland-chan, Romania-chan, Bulgaria-chan, Albania-chan and Yugoslavia-chan (even though the last one wasn't always in the parties she decided to attend this time).

After hanging out for a bit, you saw Czechoslovakia-Chan, she seemed more nice than the others and was humming to herself the Czechoslovakian Paratroopers theme, her voice sounded oddly soothing and cute.