I've been on the "proactive Yuu" tip ever since I arrived at Dynasty (admittedly not definitively in "Yuu top" camp, although I wouldn't have ruled it out). Yuu has always been cautious without ever being timid.
If it's the raw publication it's the 27th. If it's the translation, the one use on Dynasty is from 4s and generally come generally 4 to 6 days later. Altought Kusoshoptend to upload it really quickly on Mangadex if you don't have the patience to wait here.
Their first time happened like the meme.
Touko: I thought I had to act like a senpai
Yuu, already taking her clothes off: Senpai, you're so fucking stupid
Yuu is a moronsexual
They are not kids and the author doesn't treat them as such.
Spoiler: it looks like Touko doesn't like bell-peppers.
I smiled at that too. They're not kids, but Touko hates the ピーマン like a kid would. It's cute. XD
I guess ピーマン/piiman/green peppers in Japan are a little different than they are, say, in the US. I loves me some green peppers and mushrooms together, Touko doesn't know what she's missing.