You are right. I made a mistake. 徳島駅, of course, refers to Tokushima Station, and the highway buses on the Osaka/Kobe routes do not stop at Naruto Station!
Instead, I recommend to take the following bus:
It departs directly from Naruto Koen to Osaka, stopping at 高速舞子 along the way.
In the Naruto Park area, it stops at 鳴門観光汽船前, which is one of the two boat terminals of whirlpool sightseeing boats:
And it also stops at 大塚国際美術館前, which is the stop in front of the Otsuka Museum of Art.
Kosoku Maiko" (高速舞子)is near which JR station ?
Yes, it is about a 6 minute walk: