This is a comic so you can't watch it. Also only the rare 1% of super weaboos actually understand enough Japanese to refuse to use subtitles.
You can read all 24 chapters here:
http://www.mangareader.net/1406/saint-oniisan.html
You can read all 24 chapters here:
http://www.mangareader.net/1406/saint-oniisan.html