「」「？」「。。」
'The era is BL now.' 'BL?' 'Yeah. Boys' Love. Books and stuff about romance between boys.'
Literal
''Era [topic-は] BL is [emphatic-よ]'' ''BL?'' ''Yes. Boys' Love. Boys between [possessive-の] romance [object-を] handling books [etc-とか] [possessive-の] thing is.''
BL (boys' love) is the Japanese-originated term for a genre of manga, novels, and media depicting romantic/sexual relationships between male characters, typically aimed at a female audience (as opposed to 'bara' which is aimed at gay male readers). 時代は X means 'the era is X', 'X is what's in now'. とか is the non-exhaustive list particle used to soften the specific category. The nested definitional explanation is typical of explaining subculture terminology to the uninitiated.