They both have the same directing and have the same actor, Mr. Jiro.

The same style of comedy.

IF you are looking for the exact carbon copy minus the settings, then this is it!
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The atmosphere these two dramas give off is too alike. Mystery. It keeps you guessing. Addictive, wanna watch next episode ASAP, and painfully bearable at times. They both have the same actor Kento Kaku. If there's a Japanese word for Makjang (Korean), let me know what it is called. I don't think this genre of dramas is an equivalence to the Makjang genre in Korean dramas. This is in some ways alike Makjang but is added another ingredient on top. This is a type of J-dramas that I haven't known its term yet. It is more realistic than makjang and is added a Japanese society into it. It has a Japanese flavour, duh!
I find Makjang cheap, but the J-drama ones are made better.

Starring Yu Aoi and Anne Suzuki.
Both films have a similar premise, but by the look of their trailers, they are not alike.
2 girls (besties) and one boy.
In a primary school (not sure) or high school setting.