it is not just a gpu but an entire graphics card. it sits in a slot on the motherboard. based on my studies however, the gtx 770m usually exists as a separate graphics card. i never claimed that my pc was new. i just had to switch to it after my best pc stopped working. i purchased a better pc about 3 years ago but, it did not last and i am too lazy to try to fix it. tales of arise runs perfectly on my hp h8-1140sc which have gtx 650 ti boost. guess windows 7 wasts less resources. back on topic: how can i get tales of arise running on the gtx 770m?

Maybe try searching for, and installing modded drivers for your laptops GPU ?.

EDIT: Here's a reddit thread listing modded GPU drivers. Not looked to see if your one is in that list. But it seems a good place to start...

https://www.reddit.com/r/XtremeG/

i searched through the entire list twice, without finding anything. i support using modded drivers however. a "simple" solution would be to go around the problem(around optimus). my cepter maximum sledgehammer does, by having both gpus listed as full devices. i do from nvidia control panel that the gtx 770m is directly wired to the VGA port. using that might be a solution, though i have idea how that will limit graphics.

How does this have anything to do with the game?

425.31 is the last driver released for your setup, assuming 8.1 64bit, is that the one you have installed?

https://www.nvidia.com/Download/driverResults.aspx/145873/en-us

Open nvidia control panel > Help > System information

You should see the Driver version and your 770m listed under Items.
If you have a different configuration like 8.1 32bit then use the advanced search to see all drivers.

https://www.nvidia.com/Download/Find.aspx?lang=en-us

Disable your integrated graphics via bios or nvidia.

https://images.drivereasy.com/wp-content/uploads/2016/11/manage-3d-settings-preferred-graphics-processor.jpg

You can do this for the global settings but also import Tales of Arise in and force it.

my driver version was 419, which is the last officially released driver for the gtx 770m according to nvidia and the last driver insttable through the windows control panel.. i can not simply install from nvidia, as microsoft supplies the optimus software. i could ask microsoft to make the latest driver available however. global settings is to use the nvidia gpu. tales of arise have no settings anymore, because it got deleted from the list, though i do not know why. i added it right back however. i could try to disable the integrated gpu through the bios but, i do not know the key for getting in there and toshiba dropped their entire pc department. the solution could be in the bios however.

Some BIOS did indeed had a option to disable integrated graphics but I haven't seen one for years. Also, if the nVidia graphics are used only for rendering then no way you'll have that option on BIOS.
Anyway, on my old Toshiba the key to enter BIOS menu was F2 and on the less old Toshiba Tecra the key was ESC pressed before powered the computer. Both used F12 to show boot menu and I could enter the BIOS from there. You can google/duckduckgo/quant your particular model.

On some drivers there is a option on advanced power setting to choose the GPU on Win 7 and 8.1. Maybe worth a try, I've seen mostly AMD though. I've attached a screen print but no dual graphic option available since I'm using a desktop.
Right click start menu -> Power options -> Change plan settings -> Advanced

I'm not sure if the game should be programed to use the dual graphics setup. From my understandement that is completely managed by the nVidia driver itself.
On any dual graphic laptop I worked there was a setting to change the render GPU to the nVidia one (performance mode), you can check wich one is being used with MSI Afterburner/RivaTuner (on screen) or GPUZ (very small program). But in every case they were sensitive to wich driver version was used, both the nVidia driver and the Intel driver version!

As a fun fact, I've been using a Acer dual graphic laptop for some months (now with Linux Mint) but the funny thing is, setting the laptop to always use the nVidia graphics actually save power!!!
While idle and video playbak/streaming -20% and in some games 50% less power. What's even more funny is the CPU and iGPU are build under 14nm tech (i5-8250u) and the nVidia graphics build on 28nm (mx130).

Edit: not long ago Toshiba still provided drivers for laptops but the official site was not Toshiba.com.
Found it https://support.dynabook.com/drivers

my laptop is from 2013. its bios would be just as old or older. i will test that out next time i reboot. another possibility could be to update windows to a newer build. it is currenly running build 9600 of windows 8.1. i do not know a lot about windows 8.1 builds however, though updating windows could solve the problem.