Hi Mikal!
i know Tokio Dark, it's a really well-made project, a success and a great example of that you can obtain from C2... but personally i've don't liked it, i don't like the manga-style so much, and i feel the gameplay like an "expanded visual novel" more than a real, solid game experience. Have you played "Thimbleweed Park"? It's my idea of great game design: like the early monkey island (and the more-early maniac mansion and zakmcracken) game, the amount of interactive areas, objects and npcs, merged with a solid narrative structure, make the feel of freedom for the player, that make this games greats! And i think that this aspect is a little mess in games like TD (or the recent telltale games).
Your game seem to have a lot of different choices in terms of game-mechanics, my advice is to take care about the calibration between them.
Yes, I have played Thimbleweed Park and have really enjoyed it (though I have not played all the way through it yet), I also happen to like the Visual Novel style of game and the TD style of game, in general, I enjoy the narrative genre in its many forms (interactive novels, visual novel, P&C, 'walking simulators' like Life is Strange, Firewatch and AAA like Rise of the Tomb Raider and Uncharted 4.)
Good comments and cautions on watching out for 'making a mess' and calibrating game mechanics, this is why I need to make a short 'Chapter 0' demo, so I can see how it all feels to me and players.
That would be great if you did a free tutorial, I know a lot of people (including myself) would appreciate it.