Hidden Details: All Out Friend

Welcome to the one-hundredth-and-forty-ninth episode of the Hidden Details blog!

Have you found some obscure reference or detail in this comic? A JoJo reference? A sneaky little Loss? A callback to a previous comic? Let us know what you've found in the comments! Every detail that has been found will be added to the list below. Once everything has been found, this comic will officially be marked with "all details found".

Link to the comic for your convenience

Please only comment with ONE hidden detail or reference!

There is ONE Loss, ONE Balthazar and ONE crewmate. Bonus panels don't count.

1: Hahaha yeah, first of all: the text from the Kirby book is actually on the Kirby wiki, as pointed out by Daniel Myhre.
2: I mean... they were trying to revive dead fighters, Phloxiana. I think the technically were doing necromancy throughout this arc, as indicated by the book in front of Isabelle in the third panel.
3: Yay, I wasn't sure if anyone was going to recognize Sakurai's Kirby drawing on the back of the book in the third panel, Zanreo! But I'm glad you did!
4: There's a Brewster/The Roost logo on Isabelle's mug in the third panel, as mentioned by happy pasta.
5: The glasses that Isabelle 1 and 2 are wearing are actually available in Animal Crossing New Horizons!
6: There are some random fighters visible in the backgrounds in the battlefield panels. Kazooie and Crash are indeed among them, Calvin Barbanell and Dirk. Big Daddy, Bowser, 2B and Goofy are there as well.
7: A little yellow Pikmin is surprised by the "camera" focusing on him in the fifth panel. Glad you noticed him, Zach.
8: Once again, Kazuya seems unphased by everthing that's happening around him. He's just looking on stoically in the fifth panel.
9: Yes Mekhi Haley, Byleth Amongus. (There's a crewmate in Byleth's brooch in the fifth panel)
10: Because I had more Phantom Thieves members than the original game has in the all-out attack, I had to switch poses and positions a bit, and add two new ones. In the seventh panel, Cloud has replaced Joker, Pyra has replaced Panther, Tifa has replaced Skull, Squirtle has replaced Morgana and Joker and Morgana themselves got all new positions. They'll probably be fine with switching positions for a change, edmg7.
11: This week's loss in visible in the first part of the all-out attack in the seventh panel: the cracks beneath Tifa. Good catch, Tejayes.
12: If you look closely, you'll notice a little silhouette of Balthazar in the all-out attack in the final panel. I bet so too, Spirit of Gotham :)
13: This was actually a surprise to me, but while researching how an all-out attack looks, I noticed little ドドド katakana among the black shapes when the Phantom Thieves are attacking a victim, so I made sure to include them as well!
14: Instead of a star, I put the Buster Sword in the all-out attack background. I didn't know those holes were Materia slots though UnSaxon51! You learn something new every day.
15: And yep, once again, the JoJo "To Be Continued" arrow is back, as mentioned by Josha Eddleston.

Next week, I'll reveal all the details that haven't been found. These ones are written in italic.