If you liked the Chu-Bra!! anime, the Anime-Planet community thinks you'd like:
It's the first day of high school, and plenty of school clubs are doing their best to recruit new members. However, for ditzy Yui, none of them seem to fit the bill. However, when she accidentally signs up to join the light music club, Yui begins a hilarious adventure to become a world class guitarist! There's just one problem: she's never played the guitar before in her life! Joined by bassist Mio, drummer Ritsu and keyboardist Tsugumi, Yui and the gang will juggle their studies with buying instruments, learning how to read music and even performing in the school festival, all in the hopes of someday becoming a successful band!
Ryouta is a typical elementary school boy in class 5-2. He likes hanging out with his friends, he plays guitar on his broom instead of cleaning the classroom and he’s more interested in whose Superball bounces the highest than seeing a girl’s panties or sneaking a peek at a dirty magazine. However Ryouta also has the unfortunate luck of often being caught in the most seemingly-perverted situations at the worst possible times. Still, amidst becoming the guru of the turn-on of a collarbone, Ryouta continues to live a normal day-to-day life; that is, as normal a life as a tormented pseudo-perverted schoolboy can!
Both anime are about kids learning about growing up. Weather it's panties in chu-bra or the birds and the bees/getting along with the other sex in Kyou no Go no Ni TV both give off a similar feel. Both have lots of ecchi as well. Check one out if you liked the other.