GBPJPY 5M and 15M SUPPLY ZONE

I'm looking to go short from the red supply zone for about 5:1, maybe more. Now, there is a demand zone there at around the first target (T1). where I will have to pay close attention to get out if price shows signs of reversing, depending mainly on how price enters the supply zone. Also, it is going against the Daily trend, favoring the demand level at T1.