The last thing anyone expected was for the older twin to manifest Cloud Flames. (Or the one in which Tsuna is Xanxus' Cloud Guardian, flat-out terrifies anyone who's heard about him, has a younger brother who loves him, is possibly in a queerplatonic long-distance relationship with Hibari but will never admit it, and is the big brother you never knew you wanted in your life.)

Omegas are inviting. Warm. The heart of pack life. Tsuna never believed he'd be any of those things. (Omega Tsuna, warm and wonderful but entirely unaware of it, unwittingly draws others to him and inspires unwavering loyalty.) No Mafia. Tsuna's "Family" is just his patchwork pack of similarly damaged children. Lots of platonic pack feels and bonding. Endgame Tsuna/Hibari.