The second part already "Mostly" got fixed a few days ago. I don't know why, but the uploader uploaded with an older version of the translation patch (like 1.5). Version 1.7 of the translation patch fixed the syntax errors making it possible to actually beat the second part without any form of cheating if you also wanted to see the H-scenes in that part. I went ahead and combined the 1.7 patch with the partial compatibility patch. But if you want to do it yourself, you can both from ULMF
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(the partial compatibility patch is in the other thread on ulmf). The full mtl patch is only around 1.4 MB and the partial compatibility patch is even smaller than that.
Just note, that even though the syntax errors are fixed, it's possible that there may still be problems, I noticed that every scene got preceded by a random battle, which didn't happen with the 1.5 patch or the unpatched version. This didn't seem to cause any big issues, but it was strange.