ヴ is the kana for 'u' decorated with dakuten, and apparently is generally used to represent 'vu'. It's probably being used for the initial 'bu' instead of the usual ブ because Japanese doesn't normally have distinct 'bu' and 'vu' sounds.
B... BUUURNING LOOOOOOOOVE!B... burning...Your voice is too quiet!BUUUUUURNING... LOOOOOOVE!