Nankai Kosoku Bus Centre to Takamatsu

Do I need to reserve seats in advance in order to travel to Takamatsu Bus Terminal from Nankai Kosoku Bus Centre?

Please enlighten.

Thanks

Reservation seems to be mandatory.

The reservation website says your credit card of
VISA, Master Card, JCB or American Express
can be used for your payment.

- Japan Bus Lines: Reservation for Osaka -to- Kagawa buses
https://japanbuslines.com/en/bus_search/osaka/all/kagawa/all/ym_202304...
: Adjust the day of departure and the number of passenger(s).

- Footbus: Osaka -- Takamatsu Line
https://footbus.co.jp/businfo/osaka.html
: Near the bottom of the webpage,
you find a link to the English-language reservation website.