I haven’t seen the 2014 L-DK, so my review is based on this movie only. It was a typical Japanese teen movie where two high schoolers Aoi Nishimori and Shusei Kugayama live together, since they are underage they do not reveal it to anyone at school. The problem strikes when they fall in love and ML's cousin appears.
The plot is really fast-paced, the story presented a background really quick with some flashbacks and runs onto the teens lives hiding their secrets. it is like a teen fantasy where the most popular and handsome guy falls for the average-looking girl. Living together with your crush and doing everything except sex (because you have just gained knowledge about it), is what a common girls dream of. But at the same time stopping others from pursuing their dream is quite selfish. You can separate from your parents and live but you cant stay distanced from your beloved, It was teenage first love hormones. That was way too childish.

I have always been curious that, Japanese teens stay alone without any guardian supervision is that really their culture. The girl didn’t have a dream and just focuses on taking care of her partner, that point actually irked me. Everyone should go for a good higher education, and if one doesn’t trust their partner then it's really a matter of concern. she must have seen her mother doing house chores and her parents living happily together. IMO if they didn't live together love wouldn't have happened. more than the love they were each other habits and the girl wanted to cling to her habit.

The acting of the main cast Sugino Yosuke, Kamishiraishi Mone, and Yokohama Ryuse was mediocre. The visuals though were nice.
The music was good. The song 'Happy End' shows the happiness of Aoi and the song 'Every time' shows me the emotions of Reon
I wouldn't rewatch this because it is too cheesy. And I had more than enough of these typical Japanese teen movies.