Life 17 Extra Quality - Miyachan No Kyuuin

I need to check the original Japanese to ensure the title is correct. Sometimes "Kyuuin" could be a typo for "Jyuuin" or "Kyuu" (旧因?), but given the context, it's likely "Kyuuin" is a character's name or a specific term. Let me confirm that the correct title is "Miyachan no Kyuuin Life" and that Chapter 17 has an extra quality content.