Those who entered with some profits could consider gradually take profits. Nonetheless, investors could also let profits run and keep eyes on how the BOJ will react at incoming meeting as well.
At this point, I would think the risk-reward might not be quite compelling for those who consider about entering due to
1) potential turn in the BOJ's monetary policy to become more hawkish in Q3/2023
2) global economic slowdown which could affect Japan's economy as well but domestic economy could be quite resilient from tourisms recovery ...so must be quite selective in stock selections
and 3) lacking of positive factors to drive earnings expectation much higher.
For 2H/2023 and later on, I would expect TOPIX esp. TOPIX large cap. to underperform TOPIX small/mid cap. or even the Mother index.