"Patch it through," Kaito ordered.
The biggest frustration with J-Dramas is finding subtitles that sync. Because your file is .m4v (a container perfect for soft subs), do this:
The domain and Telegram handle mentioned are characteristic of online groups that specialize in providing subtitled media content (often indicated by the "sub" suffix). xxxmmsub.com
Upload Complete.
Many users accessing these domains use a VPN to protect their IP address from third-party tracking.