Man pages matching name net::async::irc::introduction in section 3pm:

Net::Async::IRC::Introduction.3pm.en	debian 10 / libnet-async-irc-perl
Net::Async::IRC::Introduction.3pm.en	debian 11 / libnet-async-irc-perl
Net::Async::IRC::Introduction.3pm.en	debian 12 / libnet-async-irc-perl