No they're just part of his costume! We can see him here at another event a few days prior without them. He's also worn the tattoos for other tr events in the past, he just wears them for events like this
ACTORS - Deluxe Duet Edition - (DDE1) Character Comment CD – Kai × Mike (Checkmate)
Source: ACTORS - Deluxe Duet Edition - Tensho Gakuen Kashou Contest Comment CD (B)
Type: Character Comment
Translation: berserkstyle
—
Mike: [sigh] I’m hungryyy... Kai, give me something
Kai: Didn’t you say earlier that you had an early lunch in the dressing room and ate a bunch of onigiri? You still want to eat?
Mike: It’s still not enough. I work out so much that if I don’t eat well, I’ll start losing healthy weight quickly
Kai: Hehe! Except for on Archaeology Club days, you’re working pretty hard at soccer, huh? I figured “maybe he’d get hungry in the middle of the contest~”, so I made you an extra lunch. I’ll give it to you later
Mike: What the hell? If you had something, you should’ve given it to me from the beginning. It’s lunchtime now. I’m sure you have it in the dressing room
Kai: STOP STOP! Wait, Mike-kun! You forgot to comment on your impressions!
Mike: Hah? Ah, right. You have to give your impressions on your song or you won’t be able to leave. Um, is...this the microphone? Are you already recording? Oh, right now. [clears throat] Hello! I am Enjoji Mike, a 2nd year member of the Archaeology Club and Soccer Club
Kai: And I’m Akizuki Kai, a 1st year! Like Mike-kun, I’m also in the Archaeology Club!~
Mike [quietly]: ...! Hey, don’t call me by that name...! They’re going to broadcast this, so quit it...!
Kai: Ah, that’s right. [nervous laugh] Hahahaha... E...Enjoji-senpai? I’m not used to calling you that, so it sounds weird, doesn’t it?
Mike [nervously]: U-uhm... Anyways, we sang a song called “Checkmate”. Kai and I practiced together a lot, and I think we did a reasonably good job
Kai: It was Mike-ku- no... Enjoji-senpai who decided on the song. It’s more of a solo song, but we made it into a duet. With that being said, I thought it was nice to hear the song in a new and unique way
[pause for the interviewer to ask a question]
Mike: Eh? Is that why we put this duo together? [quickly] No, not particularly
Kai: It wasn’t particular?
Mike [exasperated]: Of course not. Kai kept throwing a tantrum insisting that we participate in the contest, so I had no choice but to enter. [sigh] He really is such a kid
Kai: That’s mean! You get club points out of it, so isn’t it fine? Besides, it was interesting seeing so many other people from different clubs. Even Enjoji-senpai had fun, didn’t you?
Mike: I guess so. I enjoyed it, for what it was
Kai: Eh~? You were pretty excited~
Mike [mad as hell]: Ha? Wha~t did you just say?
Kai: Hahahaha! I had a great time! I’d love to do another duet in the next contest
Mike [weakly]: I hope they’ll let me sit out next time. Our club earns club points consistently, so there’s no reason for us to be in these competitions. Kai can earn points by making curry, so I’d like him to focus on that
Kai: Making curry is a hobby, so it’s different. I’m not making it because I want points
Mike: You’re always saying that, but you made curry for the Archaeology Club’s booth at the school festival a while ago
Kai: But wasn’t that because there was nothing to do behind the scenes at the festival? Mike-ku- Enjoji-senpai also complained that he didn’t just want to put rocks on a table
Mike: Well, of course. It’s not like we’re kindergarteners playing store
Kai: [chuckles] Hehehe, that’s true, isn’t it?
Mike: But since I participated, even if I don’t win, there’s still a chance I’ll earn points and I’d like to take what I can get
Kai: Yeah! It would be nice to get some kind of award!
Mike: Our performance wasn’t bad. We’ll probably get around one thousand
Kai: You’re so confident!
Mike [proudly]: Of course I’d be! Now then, I think it’s about time we start wrapping up the interview, wouldn’t you agree?
Kai: Are we done already? You didn’t say much about the song... You really can’t wait to get back to the dressing room, huh~?
Mike [murderous intent]: Kai...
Kai: Alright, alright. Well then, thank you all for listening!
Mike: Thank you! ^^; Now, if you’ll excuse us
[they walk away]
Mike [fuming]: HEY, YOU DAMN DOG! Not only were you making fun of me in front of the microphone, but you also kept calling me “Mike” over and over again! You MONGREL! STUPID DOG!!! Why can’t you learn for once?!
Kai: Ngah~ah sorry sorry! 🥺 It’s just that it’s hard to suddenly change what you call someone...
[their voices start becoming more distant as they continue to walk]
Mike: I’ll be taking all of your lunches as punishment. Would that suffice?
Kai: Ahahahaha, you really want to eat lunch, don’t you?
Mike: I guess the hungrier I get, the worse I feel. Let’s get a move on!
Kai: Okaaay~! After we finish eating, let’s go listen to Chiguman-senpai sing!
Apparently the wall photos are drawings of the manga editor (first on the left), Shihei Lin, and the anime VAs, Saori Hayami (Yor Forger), Takuya Eguchi (Loid Forger), and Atsumi Tanezaki (Anya Forger)!
Endo-sensei’s illustration of the Forger Family to commemorate SxF Jump Festa 2024 Stage! (Source)
The outfits the characters are wearing are based on the seiyuus’ outfits (Tanezaki-san canceled her appearance due to poor health but she was watching and supporting them from her home!) (Source):
