Episode 3 does not exist. The story from the visual novel beyond the first two episodes remains unadapted in OVA format.
6 total episodes (4 original parts + 2 specials). Episode 3 does not exist
Many official Japanese stores require a VPN or a local payment method. Episode 3 does not exist
To give you a clear, accurate update:
If you have seen references to "Episode 3" online, they are likely: Episode 3 does not exist
Following the production studio (Pink Pineapple) often provides the exact release dates for Blu-ray volumes.