If I am not wrong, its semi-synthetic.
For 1KR-FE in Vitz, Passo, Boon, etc. I would sincerely suggest fully synthetic 5w-30, meeting latest API SN / SN Plus (preferably with RC) and / or ILSAC GF-5 criteria.
Total Quartz 9000 Future series 5w-30, Shell Helix Ultra 5w-30 (I do not know that it has become available here in Pakistan or not, but on Shell local website, its details are shown), Kixx 5w-30, ENEOS Sustina 5w-30 (available with selected Attock Petrol Pumps), and even PSO 5w-30 are some of the reputed brands, and meet criteria mentioned above.
You can choose any, but my personal recommendation: Total Quartz 9000 Future series 5w-30, its best value for money. PSO is the cheapest option. Change oil + filter after every 5,000 Kms.