My Friend's Dad's a Hunk 3 & 4

Part 3 Synopsis:

Yuusuke offers to show Akira and Takumi some “adult summer fun.” Curious, they agree…but find themselves at a public pool. While Akira is distracted with a girl, a kid runs off with Yuusuke’s bathing suit. Takumi fetches it and brings it to a waiting Yuusuke in a bathroom stall. Yuusuke pulls Akira in with him and says that he needs to wash himself up before getting back in…

Part 4 Synopsis:

Takumi’s got a special package delivered. After almost being caught by his mom, he races upstairs and opens it. Inside is a bottle of lube. Takumi gets in the right position and sets himself up for a little TLC. “If Yuusuke ever wants to… and then… we could…”