Left: The Midgar Blues is a song references Cloud leaving Midgar. Check out the lyrics here. It is first featured in Final Fantasy VII Remake during Chapter 8 while searching for Tifa in Wall Market. An alternate version named Midgar Blues del Amor is featured in Final Fantasy VII Rebirth Chapter 2, the morning after Cloud and Tifa fight on the roof inn in Kalm, and after a scene you can see where Cloud and Tifa discuss the water tower being where he made that fateful promise to her.
Final Fantasy VII Remake:
Final Fantasy VII Rebirth:
Right: This shirt features the town of Nibelheim with several details; the water tower where Cloud made the promise to Tifa, stars above the water tower like the night of the promise, and two houses with similar heights to Cloud and Tifa’s houses which are also side by side and face the water tower.
Note: It’s not an exact representation of Nibelheim’s layout but considering the other references, would make sense the two houses featured would be representing Cloud and Tifa’s.
Bonus: Gold Saucer T-shirt
While this is not specific to Cloud and Tifa, there are some things about Gold Saucer that are which is why it’s been added here.
Reference 1: Where Cloud and Tifa shared their first kiss
Reference 2: Cloud and Tifa’s plushies are together in Johnny’s treasure trove sidequest collection.
If you go to Johnny’s place in Costa Del sol after starting his Treasure Trove sidequest and obtaining the bomb and chocobo plushies you obtain in Gold Saucer, they are seen side by side on the shelf with the Gold Saucer logo behind them.
Since Remake, a chocobo and bomb have represented Cloud and Tifa. Check out Tifa’s charms on her outfit, which are also in one of her Ever Crisis outfits:
Tifa’s Remake trilogy outfit charms as described by the ultimania:
Tifa’s chocobo and bomb charms on her Seventh High outfit from Ever Crisis. If you equip her weapon on a different outfit, each bracelet can be very clearly seen and it shows she has the same charms as her default outfit’s weapons in the game:
Reference 3: Cloud and Tifa’s Loveless trophies are side by side in Johnny’s same sidequest that you obtain when getting her date in Gold Saucer.
