Boku no Kanojo ga Majime Sugiru Shojo Bitch na Ken - Vol. 7 Ch. 73

[MangaDex]

 

[manga_gal]

And that's why you always wear underwear, you never know when you're gonna get pantsed in front of the entire school.
Also this is the most nudity they've shown in this manga, and it's Wakaba of all characters lmao