Act 19: Usagi's Heartpounding Valentine (うさぎのドキドキバレンタイン　/ Usagi no Dokidoki Barentain)

5:00 Valentine's Day

As a Japanese custom, on Valentine's Day, women (usually, it's not 
unheard of for males to do so, especially if they're very young) give 
presents to boys they like, usually chocolate, though other kinds of 
presents such as hand-knitted scarves in this episode happen too, 
though it's becoming less popular. The favour is returned one month
later on March 14th from the men with White Day.

9:20 Kamekichi's Valentine reads

To Kamekichi from Marilyn. The word "food" can be made out but the
rest of the text is obscured.

9:51 Sense of Social Obligation

Not only are Valentine's chocolates given as romantic gifts. There are
a type called "giri-choco" (obligation chocolates) that girls may give
to men in their lives such as fathers, brothers, co-workers, bosses and 
in this case, the local boy who works at their favourite karaoke place.
This is distinguished from the "honmei-choco" (heart's desire chocolate). 
Giri-choco are given as signs of friendship and gratitude. Such as how
Minako was giving Artemis chocolate earlier in the episode. Here, 
Motoki feels he should be at least getting some giri-choco.

13:43 New Years' Gift Money

Known as "otoshidama", this is a custom where children are given
money at New Year's, usually from relatives in small envelopes. 
The amount of money given depends on the family.

15:28 Signs reads:

Shimizu

17:43 Rei's book is called.:

Hall & Theatre Facilities Guide.