in a shower, Kumiko grapping Reina from the back, by one hand grapping her breast, and by the other hand pressing against Reina breast with Shower Sponge, Kumiko is teasing the other girl, Reina look surprise and embarrassed her face is red a little.
both of them fully nude, cover in water and soap.
Reina breast are around C , Kumiko breast are a little bit smaller, but Kumiko is a little bit taller than Reina