For those who don't understand how to do the 4th ending 1. Head pats 2. Boob touch. 3. the first action on the right column 4. Boob Grope (it would've just appeared) 5. Skirt Lift 6. Blowjob 7. the first action on the right column again 8. Shirt lift (the one that doesn't disable her arms) 9. 2nd option on the left column 10. Boob Grope 11. Paisuri (boob job) 12. Boob Grope
And bam that's it. you should have 69 lust and 74 awareness. Thought this was necessary as it took me like 15 minutes to find out how the tutorial in the description worked