>>533856069
>>533856303
Here's my Oguri run from today with 14 stam sparks, I don't remember the specifics but it was definitely a higher roll than usual.
I go for bonds early on while prioritizing building bond on a speed or stamina training, with speed being more important since that builds power too. Eventually you might hit a point where one or two umas are far below the friendship you want them to be at while everyone else is at orange so you start only building friendship with them if they coincidentally show up in your rainbow trainings.
Prioritize grabbing energy from events whenever possible and rely on events (especially Kitasan's) to bring your mood up and pray you don't get chain mood-downed. I'm currently just farming blue sparks so I make sure to hit 600 in stamina and power and usually use my 1st summer training to achieve that unless my speed trainings are gigastacked during it. 2nd summer training is usually just all speed training.
Can't say what you're doing wrong, but your cards don't look terrible. Maybe try 3 speed 3 stam instead since Oguri comes with a speed and power growth stat by default, or even 2 speed 4 stam for a long distance Oguri.