Coolant leak?

[Branderrp]

My yaris is a 2006 model 5dr 1nz-fe engine with around 346000km. I've noticed coolant levels drop in the reservoir. I filled it up to the full mark 2 days ago and noticed it drop about 40% in the reservoir. There is small dripping happening and it seems to come from above the rear of the oil pan (laid a cardboard box underneath and then witnessed it this morning too.

Attached are two pictures that show where I see potential coolant leaks but they're on the other side as opposed to where I see the leak from underneath the car. Nothing pink appears near the water pump which was replaced 8 years ago (the pink stuff confirmed water pump failure)

Anything I should be on the lookout for? I replaced the radiator cap last time I had coolant issues and I doubt it's the cap this time since last time there was dried coolant surrounding that but not this time (unless you count what's going on in the picture)

[Tamago]

head gasket?

[Branderrp]

The oil on the dipstick shows no contamination at the moment

I've added some stop leak so I'll observe and see how it goes

[Branderrp]

Update, stop leak didn't work. I've just seen wet coolant appear on those spots so I highly believe that hose is busted. Should changing that hose itself fix all the problems? I don't see leaks anywhere else