system / series / lineage / family

denpa song, a Japanese genre of catchy electronic music featuring cute vocals and nonsensical or unusual lyrics.

radio clock

(colloquial) current boyfriend

everything

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

research & development; R&D

(education) research project, done by Japanese schoolchildren during summer break, to be presented upon return to school

a research student (i.e. a visiting or non-matriculating graduate student) / a researcher