As we all know, these two are good friends but how close are they in real life?
Oguri Shun described their relationship when he appeared as guest in 5LDK, saying that one time when he and Jun went out for a drink, Jun got so drunk that Shun had to drive Jun home. But Shun didn't know where Jun's keys were so he had no choice but to take Jun with him and let him crash at his place. Shun let Jun sleep on the sofa. When Jun woke up, he casually asked Shun "What's for breakfast?" (lit. what are you going to feed me?) LOL