The most recent My Apartment Manager is Not an Isekai Character installment is The Party Starts, Chapter 4 of Hallowe'en in Another Reality, or, A Mingling of Misplaced Souls, and it contains an original song in the Hokago Tea Time style, with that known hat-tip coming in Yui's introduction.

"This next song is something new that Mugi-chan and I wrote since we came to New Jersey. Someone who's listened to a lot of our songs once said that I tend to write about the things I love — my guitar, my sister, my friends... Food..." (A footnote here acknowledges that the "someone" in question is Azalynn.) She grinned. "They weren't wrong."

The audience laughed and a few applauded. Yui's grin grew wider and she inclined her head toward the ones clapping. "So of course the first song we've written since coming to Somerset is about my new favorite treat! I call it 'Blend-in!'"

Ritsu gave the group the beat: "One-two-three-four!", then Yui launched into a short but distinctive hook that led into the song proper, and leaned into the mike again.

"Chocolate or vanilla,
Strawberry's good too,
But it's what goes inside it
That makes it good, so true,
Can't have one too often
Or my waistline will balloon,
Gonna get a blend-in!

"Fill it up with fresh fruit
Or pick a nut or two,
If I'm really hungry
Get candies in there too,
To really fill my stomach
Add a milkshake, too,
Gonna get a blend-in!"

The tune was bouncy, the arrangement simple and the lyrics rapidfire. It had the same kind of energy as "Fuwa Fuwa Time" while not sounding like it at all, and within a few bars the audience was clapping along to the beat, and a few were energetically dancing. Others turned to each other, asking whether they had any idea what a "blend-in" was, only to get a hint of an answer as the band drove into the song's bridge:

"Chocolate and vanilla, oreos and cream,
French vanilla, butter brickle, each one is a dream.
Butter pecan, cappuccino, coffee, maple nut,
Cups and sundaes, cones and waffles are delicious but
There's something that they make there that simply nothing beats
That unique mix of ice cream and a million different treats!
Gonna get a blend-in!"

Up on the stage, Yui repeated the opening hook, a brief respite before the last verse.

"Peaches or blueberries
'Cause fruit is good for you,
Lots of different cookies
Give me something to chew,
Mixing them together
Is what makes it good,
Gonna get a blend-in!"

The other members of the band echoed the line.

"Gonna get a blend-in! (Gonna get a blend-in!)
Gonna get a blend-in (Gonna get a blend-in!)
With pineapple on top!
With pineapple on top!" (Another footnote, here, credits "the KanriKyara Project team" with the lyrics and repeats the link to the audio file.)

Yui and Azusa traded bars back and forth then abruptly brought it all to a close. As the audience broke out in applause and scattered cheers, Yui smiled broadly. "Yeah, it's a little short. But we're working on a bigger arrangement. Just wait until the next party!"

In the words of at least two jumpsuit-wearers: what do you think, sirs?