>>109823
You should obviously check out the author's other anime, Soredemo Ayumu wa Yosetekuru. For light romance anime where the woman is the pursuer there's
>Jijou wo Shiranai Tenkousei ga Guigui Kuru
The synopsis probably reads similarly to Takagi-san but personally I found the boy quite annoying.
>Hi Score Girl
This one has a bit more drama than Takagi-san but it's a very good anime and it has its sweet moments like Takagi-san has. I believe both were the pursuers in this one.
>Sono Bisque Doll wa Koi wo Suru
This is a high school romcom and they're not childhood friends but it's pretty sweet
If you're fine with sweet romance anime where the couple aren't the main focus then (ranked in order of best, regardless of romance plot)
>Soredemo machi wa mawatteiru
One of my favorite anime shows, so there's actually two couples (or attempts at couples). The little brother and his classmate resembles Nishikata and Takagi very well, then there's also the MC and her childhood friend. Much more comedy than childhood friend romance though, in fact there's very little development for the romance.
>Minami-ke
Similar to Soredemo, the boy is the pursuer but it's a very sweet anime (though there's no romance plot). Similar to Working, Ichigo Mashimaro, and Wataten.
>Working!!!
SoL comedy, the romance part is VERY slow but it's there
>Tamako Market
Childhood friends, but the romance isn't the focus. A Kyoani anime about community.
>Gekkan shoujo Nozaki-kun
SoL romcom with a dense male lead (but not in the typical annoying way), pretty good
>Koi wa ameagari no you ni
Age gap romance, one of the better romance anime shows I've seen. The reason why it's ranked low despite being really good is because THERE'S NO SEASON 2.
>Araburu Kisetsu no Otome-domo yo
Focuses on the general love lives of high school girls and not just on the main girl and her childhood friend. It's Mari Okada show so there's melodrama.
>Nodame Cantabile
The two main characters' relationship are in focus but the romance plot is played for laughs at the start. Wouldn't really call this a sweet romance since the male lead dodges Nodame's every advance in favor of studying and working. The first season was good but I'd stop there.
And then there's Mirai Nikki