Takefusa Kubo led Real Sociedad to victory in the opening round of the Spanish top-flight season on Sunday, scoring the only goal in a 1-0 win away against Cadiz.
Making his first La Liga appearance for Real Sociedad, Kubo netted the winner in the 24th minute at the Nuevo Mirandilla stadium in Cadiz.
The 21-year-old Japan attacker acrobatically corralled midfielder Mikel Merino's ball into the box with his left foot before half-volleying past Cadiz 'keeper Jeremias Ledesma with his right.
Kubo also created several chances with his dribbling and playmaking before heading to the bench in the 78th minute.
The former FC Tokyo star joined Real Sociedad on a full transfer from Real Madrid earlier in the summer following loan spells with Mallorca, Villarreal and Getafe.
Elsewhere in Europe, Shinji Kagawa's Sint-Truiden took its first loss of the Belgian top-flight season, going down 3-0 at home to Anderlecht.
The Japanese-owned club is still looking for its first win, having drawn in each of the other three rounds this season.
"We need something more in attack, that's a big issue," said the 33-year-old Kagawa, who substituted for injured countryman Daichi Hayashi late in the first half. "We have to come together and keep moving forward without our confidence wavering."
Japan winger Junya Ito made his debut for Stade de Reims in France's Ligue 1, entering in the 76th minute of a 4-2 loss to visiting Clermont.
Reims led 2-0 before a 47th-minute red card for defender Emmanuel Agbadou handed the momentum to the visitors.
Ado Onaiwu made his first appearance of the season for Toulouse, coming on in the 76th minute of a 3-0 win away to Troyes.