The second half of episode 3, when the club helps Koichi fix the sunglasses he broke and return them his best friend, who turns out to be the owner of the cafe they frequent, which in turn leaves Koichi with no regrets left and helps him move on to the afterlife. Doubles as a Tearjerker.
"PRESCRIPTION SUNGLASSES! I'll make sure to buy two and give one to you for sure!"
Episode 11. The Meganebu and Himakai finally working together.
The closing minutes of episode 12. And The Reveal that Akira's whole "See through women's clothes" thing is a lie. And he's really trying to construct glasses that can make his blind brother see again.