Erika reads her young trainee's diary and finds that pretty Ruka secretly wants to give her senior's plump butt a good spanking. Her wish comes true and we can enjoy Erika's bikini-clad body as we watch!

It seems that Erika's diary shows her secret desire to thrash her young trainee's bottom. We can enjoy Ruka's swimsuited butt being given a sound spanking! Full version of Diary Spanking.
23min. 32sec.