These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: This Ugly Yet Beautiful World
Heartwarming Moments: Several, but especially the last episode where Hikari and Takeru watch a vision of themselves as the loving domestic couple they might have otherwise been. They watch Takeru driving off to work on his delivery bike while Hikari and their baby wave goodbye.
Moe: Hikari & to a lesser extent Akari until the Big Reveal that is..
Tear Jerker: There are moments where the series comes darn close by any criteria. For example: Takeru's childhood abandonment, the sheer desperation of Akira and Hikari in the final episodes, and the quasi Downer Ending.
The Woobie: Both Hikari & Akari when they are tortured by the reality of their true mission on Earth (to decide whether or not to destroy the planet).