Serialization started from May issue of Rutile on March 2015.
1 Volume (Complete)

Shin is ridiculous. 😂
His '3' lips crack me up too. He's a pretty cheerful, airheaded guy. I was kind of unsure how I felt about that at first but it grew on me. 🤷
I really like how Mitsuya shows his emotions, it's cute when he blushes and gets shy only for Shin to validate him and share his own feelings. Once he realizes his feelings, Shin doesn't hesitate to say or show when he wants kisses or more.
The first time sex scene was mature but short and focused mainly on the joy and feelings of the too, it was sweet.
The step-brothers relationship is sweet too, the brother complex isn't obnoxious and I understand why they're so attached. There is a where it's implied Satoru wanted Shin for himself but overall he ended up playing matchmaker and ing the two.
I understand why it got a 3/5 on chil-chil, it's a good pick-me-up before diving back into something with a little more conflict and length!
simple and cute, a quick read, even if it wasn't complex i would like it more if it was a bit longer T-T
Its very cute, nothing extreme but in a good way. Its a fuffier yaoi, not many ecchi scenes which i personally dont mind. The characters are very well drawn and very likeable.
This is a nice breather from all the heavy stuff I've consumed lately. It really is just a whole volume of fluff and even more fluff, there's no unnecessary drama, the characters are great fun, all in all a great BL getaway to relaxation. There isn't exactly a plot but it's entertaining nonetheless, so kudos to the mangaka for carrying the whole story with only her story-telling skills and incredibly likeable characters. I'm also very impressed with how much more expressive her artwork has improved; the characters become even more adorable with her strokes. Definitely a manga anyone can enjoy.
Pretty good slice-of-life plot with a simple feeling to it. Nothing overly complex or deep. I agree with the comment below that it wasn't really anything out of the ordinary. However, it's better than most yaoi out there, making it one of the rare few that's worth reading.
This is one of those manga that is very simple and enjoyable and you get to follow the couple both before getting together as well as afterwards (which there is a lack of in the yaoi-manga world if you ask me...). Yet it's nothing out of the ordinary and nothing that personally makes me get excited about it. It just is and that's all. Enjoyable but I bet in time it'll also end up being a bit forgettable.