Okay, so this manga is really good and interesting, and has a slow pace. However, it's unclear when exactly the relationship between the brothers (step-brothers, but still brothers anyway) becomes a sexual one. Apart from that, I really like it, even if at some point I was uncomfortable.
Edit: The older I get, the more uncomfortable I become with this manga. In my head I just make the little brother older, because 8-13 year olds are definitely not like that, and way less with a family member... It's hard not to cringe sometimes. I guess my tastes are changing and this is a type of fiction that makes me uncomfortable. Still rating it 4 stars for when I enjoyed it.
Edit2: I can't enjoy this anymore, so I'm leaving it here :')
Super Lovers