After Becoming an Immortal, I Became the Celestial Realm's One and Only Favorite

Here's the blurb: Saucy version: He Ji: Ever since I entered the Immortal Realm, I've been the War God's one and only favorite. I told him, "There are so many people in the Immortal Realm. You should share your favor around." But he just wouldn't listen~ Serious version: As a little box spirit, one adorable fellow gave himself the name He Ji. It sounded nice and auspicious. He always thought it was a great name, until a notoriously infamous War God picked him up. Now He Ji wants to change his name. Here's why: The War God: Well, this is something. Even a box can become a spirit. What's your name, little box? The still incredibly naive He Ji: I'm He Ji. The He in congratulations, and Ji as in good fortune. The War God: Nice name. From now on, I'll call you Xiao Ji. He Ji: Huh... Huh? Why does that sound a little wrong? Eventually, He Ji figured out the War God's dirty sense of humor. Looking at the War God sprawled shamelessly across his bed, He Ji made sure to speak loudly enough for him to hear every word: "You're the little one! Your whole family is little!" The War God drew the little box spirit into his arms and flashed a wicked smile. "Am I little? You should know better than anyone." Then the blushing little box spirit made a pop and turned back into a box. Note: A cute, sweet story. Adorable box spirit bottom x sly, doting War God. Theme: