every week; weekly

Friday

(software engineering) class diagram - A type of static structure diagram that describes the structure of a system by showing the system's classes, their attributes, and the relationships between the classes.

participation, commitment

to participate, to join, to enter

(education) class (group of students in a regularly scheduled meeting with a teacher) / class of things (typically products) sharing certain features / (programming, object-oriented programming) class

鱝, 鱏: ray, a kind of cartilaginous fish.

Used in situations requiring decisive, sudden force, such as throwing. oof

良い: (obsolete) good

英断: resolution; decisive judgement