Fault!! 3

During Sugiyama’s tennis training camp, passions ignite under the summer heat. His playful step-sister Mio entices him into steamy private sessions, blurring familial lines with teasing touches and lingering gazes. When his devoted doubles partner, Saeki, discovers their secret intimacy, jealousy flares—culminating in a bold confession of her own suppressed desire. The trio surrenders to pleasure, exploring forbidden cravings as lust overtakes restraint, leaving their tangled emotions smoldering like the summer sun.