Recommendations

The supernatural theme of the story. Mushishi is much more passive than Gegege no kitaro. The actors: one is younger than the other. Might seem like one is the past and one is the future.

Cheap kind of film so both are not top quality. Both leaves unsatisfied feeling after finishing it. Not as bad.

Similar drama style; can't describe the similar feeling as the director does it.

Action and psychological with super enhance humans. Of course, an epic battle scenes ensures.

Life does not always give you lemon. Took place in China; both actors and actress goes through history (war, famine, reconstructions).

realism time. Both are about the vulgar human times. It's sad, but very real. Kind of dirty in the style of the movie.

Ridiculous storyline that works. It's funny and have a good among of fighting to keep people entertained.
Tai Chi Zero is the prequel to Tai Chi Hero

Ridiculous storyline that works. It's funny and have a good among of fighting to keep people entertained.

Realism time. It's the weird effect that both movies give out. There are mixed feelings. Somehow similar concepts that make audience see the real humanity.

Both are comedy. The actors are funny and the pairs are cute. Both guys have their own unique trouble to deal that are both initiated and resolve because of the female lead.

Boy's Love material!! Both have cold calculative guys.
I Love You As a Man - is more comical, and one that I adore; music is pretty good.

Funny and Watabe Atsuro is also in it. Both actors/actress do crazy things. Disobedience is a must in these dramas

Both shounen ai reference material. Cute guy-ish; no mating scenes.

light-hearted shounen ai material. Both does get serious at some parts.
Antique Bakery - comical; one of my favorite drama to watch

Both have the exact concept, theme, and genre. They are light-hearted, super cute. Generally made for beginner shounen ai.
Except
Boy meets boy is a pretty short film.