[Crossover] Primo, I Can't Keep Supporting You

What's it like to wake up beside your revered ancestor, Primo? Tsuna pushes open the office door, sees the two disasters inside fighting like a pair of catastrophic weather systems, then turns to Giotto and says seriously, "Primo, let's run away." When they say run, they really mean it. Using the excuse of showing the First Generation around the world, the two pack up and board a plane bound for Japan. But can someone tell him why, despite only being away for three years, Japan has suddenly gained a death god detective, nonhuman sports, magical girls, and some kind of esper? Giotto: "Decimo, someone called the Holy Grail just contacted me and asked whether I wanted to be summoned as a Heroic Spirit." Tsuna: ... Tips: 1. The pairing is set: G27, no switching, breaking them up, or changing my mind. 2. This story probably won't be contracted, so please don't leave bad reviews. Love you! 3. Updates are irregular. If you want to urge me, ask yourself, "Am I destined to get an update today?" 4. There are no side pairings, unless you count Dong Gu and his true love as half of one. If you want a side pairing, bring a microscope. 5. Favorites, comments, and cute little landmines are what motivate updates.