For an athlete who has gotten used to operating as the focus of everyone else’s attention — “It feels like I always have cameras on me,” Hachimura said — “Terrace House” has long been a welcome reversal, offering him the chance to peek into other people’s lives for a change. Now, it is even more of a diversion — and a reminder of the way things were before the onset of the pandemic. There have been five seasons of “Terrace House,” which debuted on Japanese television in 2012 and now streams to a global audience on Netflix. Even before Hachimura’s rookie season came to an abrupt halt — he was averaging 13.4 points and six rebounds a game — he had watched each season of the show multiple times, including no fewer than six rewatches of all 36 episodes of his favorite season, “Terrace House: Aloha State,” which was based in Hawaii. That works out to more than 120 hours of watching other people eat their meals, clean their bathrooms and chat about their crushes.