Shigatsu wa Kimi no Uso, Koe no Katachi Recommendations
Superficially, we get a melodrama on both shows with a male protagonist suffering from their internal conflicts and a heroine that becomes a catalyst for the protagonist to grow. But why I believe these two are very similar is due to sharing a similar thematic irony. In Koe no Katachi, the protagonist learns to "hear the world" from a deaf girl. Likewise, Shigatsu wa Kimi no Uso has a similar underlying theme as well.
Moreover, the animation and OST on both animes are beautifully executed as well.
This recommendation isn't to say that you'll enjoy Shigatsu wa Kimi no Uso if you liked Koe no Katachi, but if you liked Shigatsu wa Kimi no Uso, it's very likely you'll like Koe no Katachi.
Describing why this is the case is difficult. Too difficult
In both this cases I recommend the sub, although the english dubs of both are also very well made. The issue is that the translations are too literal for Shigatsu wa Kimi no Uso and too loose for Koe no Katachi.
If you want to get very emotional, this is also a good request.
both heartbreaking anime about a boy and a girl bonding together. eventually, something happens, which make both anime amazing. these anime will affect you and potentially make you cry
2 Very emotional series wich i really liked watching both talk about how important friendship can be for all of us :)
Similar thematic irony
High school setting
Both have similar plots.
people having difficulties connecting with other people.
Both are very realistic drama series about a boy how conquers his inner demons due to the help of a girl.
Both are perfect drama - romantic animes.
Both are slice-of-life animes that focus on music. Koe no Katachi is about a deaf girl and the boy who tries to help her overcome her disability, while Your Lie in April is about a prodigal piano player who stops playing after his mother's death but meets a free-spirited violinist, which changes his perspective. While both main characters face similar obstacles, they go about it in different ways.