The titles include Keeping Watch, Exit No. 6, Island Etude, What On Earth Have I Done Wrong'! and The Most Distant Course, which won the Critics' Week Award at Venice last year.
The deal also includes two previously reported sales on titles that are being handled by Taiwan 's Three Dots Entertainment - Spider Lilies and My DNA Says I Love You.
SPO was one of the first Japanese companies to bring Korean product to the Japanese market and is now trying to do the same for Taiwanese films.
All the films will be released in Japan as part of the Taiwan Film Festival, which opens on August 23 in SPO's Tokyo Roppongi Cinemart for four weeks, before moving to Osaka in late October.
The package deal was negotiated by Joint Entertainment founder James Liu and SPO's Yuki Sakurai.