Responses
should probably mention around ch 10 tsubaki (the 10 year old) starts calling yuu (the highschooler) his boyfriend but they are NOT doing anything that is strictly romantic (for example hugs are not limited to between lovers) and yuu didn't agree with it either. it's at the same level as little kids saying they're going to marry their parents.
whether or not when both of them are past legal ages they will become actual lovers is something we don't know yet though
the title and cover page are meant to be misleading as a joke.
there's no nsfw or any type of sexualization of either characters (unless you consider indirect kissing by sharing drinks as nsfw and in that case im a little concerned for you)
unless you can't stomach them even having implied feelings and blushing at each other sometimes, then its completely safe to read. tbh if it wasn't for the cover page it pretty much would look like a manga about neighborhood kids being bros.
also the author's name is nakayama kou. their twitter is @Okmgmk but Okmgmk isnt their name. if anyone knows how to contact mangago to fix this please let me know.
just a warning for people interested in following the author's twitter, do not look through their side account listed in their bio if you can't stomach fictional inc*st because they draw questionable nsfw fanart that includes that content. the ship name is in the bio but unless you know the franchise its of and can read JP, it's easy to click unknowingly.
a kind reminder please don't reply, qrt etc. in any other non-JP language because the comic isn't licensed in any other language. Non-JP replies, qrts etc. are big red flags that their works are being stolen and illegally translated and it would be awful if the author tries to take legal actions or worse, decide to stop working on the series because of it. machine translations are 100x better if you feel you must show your support in words.