Heartwarming / DieBuster

• Tycho's realization of the true nature of her power, and the subsequent defense of the colony, give you the warm fuzzies.
• Nono giving Lal'C her singularity as a paper crane, after trying and failing so many times to make one in the fifth episode. Also, Nono's final wish before becoming one with the Singularity. Which leads to...
• Welcome Home. So nice, they end with it twice
• In Super Robot Wars Z 3, during one of the fights, Nono gets some awesome and heartwarming backup... Noriko Takeya herself, with Noriko able to be a Cool Big Sis to Nono and both of them getting to witness the real person Nono idolises.