The art is so cute... gotta love how the friends are very supportive of Kano though. When I read the "harem" tag I thought it's gonna end up with them all going for the brother, but I guess it went to a different route and escalate as her friends are very pushy on the ecchi stuff lol.
Honestly there is still that dread in my heart whenever I read this manga that the Senpai will just take imouto-chan away. It feels like she is just using him and stringing him along since she is into girls. The friends even mentioned it how Senpai coerced them into doing student council work.
i guess I just still have PTSD from the authors previous works.