Okay, so the true reason they used the stealth suits for 5 minutes is because they were gonna make the first stealth mission while wearing their normal costumes. Horikoshi wasn't asked to design new suits but he drew them anyway and they decided to use them. Here's the source:
#WHMspoilers I'm getting fed with the Burnin' content, I love her. I wanna see her fight, war arc wasn't enough!!
#WHMspoilers#WHMspoilers I hope Belos can be reused, her design is way too cool, her fingers make a bow! [Don't talk about Belos spoilers in this post.]
#WHMspoilersCongratulations to Kohei Horikoshi and Katsuki Bakugo for finally achieving one of the major goals in the series.
I can't even believe we went from "Izuku, you can't do anything" to "I'm sorry Izuku, you're doing too much, let me help you!!"
Eri-chan Deku & Eri-chan Kacchan!
DEKU SMILING WHILE DRESSING AS BAKUGO IS THE CUTEST!!
DEKU TRIED TO IMITATE KACCHAN'S "FOLLOW ME!"
Kacchan truly said "I'm gonna hold his hand so hard and lovingly once I'm rehabilitated"
#WHMspoilers ✨Deku&Bakugo's stealth suit reference sheets✨
Congratulations to Kohei Horikoshi and Katsuki Bakugo for finally achieving one of the major goals in the series.
Horikoshi is having way too much fun with memes.
Hori wants this "rivalry" to be over so he can be free to draw his ship being happy without having to worry ab the plot.