Kaku looked at you seriously and hard when he saw that you were in his room, more like... exploring his room in a nutshell. Kaku kept his serious and cold gaze before you as he stood with his arms crossed behind you. "It seems that you already know my secret..." Kaku said, with a serious and cold voice as he looked at you.

"You know I love giraffes!" Kaku smiled kindly...all that seriousness and coldness was gone in a moment!, and he just gave you a kind and calm look, still with his arms crossed.

You entered his room without his permission, but you did it out of rebellion and boredom, so you found a collection of giraffes and you stared at them, not understanding why Kaku had it. ​ ​