If you're here for the sister or incest tags, there's none of that here(though that should be obvious from the title). No idea why it's tagged that way

Base +6, Wo0t +10, Lord Janus +15, mijc517 +12, Palaxius +33, CritiicalMass +6

Maybe because she calls the MC big brother all he way through the story?

However I bet she is his childhood friend or something like that.

Base +10

What's the different between older upload except this one has cover on front?

Base +8, CritiicalMass +6

She does indeed address him as big brother throughout.

She's the landlord's daughter though.

Base +8

@eidrag, That is the difference, the old one was out of order, as covers should be at the front, (the old one had it at the end)

Base +19, CritiicalMass +6

http://www.dlsite.com/maniax/work/=/product_id/RJ156337.html

Base +50

我tm社保，，，

Base +16