Talk:Monster Girl Quest: Paradox/@comment-32112600-20170623160019/@comment-4790504-20170623174322

You will recall that after Luka & co. left the third Tartarus that they agreed on completing Luka's contract with Undine. To do that, they have to first get to Grand Noah and then to Undine's Spring.

Remember that blocked cave entrance just north of the Luddite Village? It's now open, so you can head  to Port Merle (マールポート) by going through the Great Merle Corridor (マール大回廊).

Once you're at Port Merle, talk to the sailor at the docks in front of the docked ship. You'll be denied access because you need permission to sail through to the Marine HQ. To get permission, talk to the Seahorse Marine just to the left by the crates (the one that's snacking on the food) and she'll give Luka permission in exchange. Now you can sail on through to the Marine HQ.

You'll soon be given a choice to either help Bonni and her Pirates to reclaim her confiscated treasures, or side with the Marines and eliminate Bonni's Pirates. Whichever faction you choose is up to you (though keep in mind that siding with Bonni will prevent you from recruiting the Marine's commander, Leviathan).

From there on it's pretty straightforward in terms of where you have to go. Just avoid getting sidetracked (f or example  you don't need to visit the Yamatai Cave yet) and head straight for Grand Noah.

Also, the initial meeting in the Pocket Castle can be skipped by selecting the second option. It's just an optional recap of all the events that occurred during Part 1.