a 軍歌 (gunka, “war song”)

お祖父さん, 御祖父さん, お爺さん, 御爺さん: grandfather, male senior citizen

to sing / to compose poetry / to recite poetry / to tweet, said of birds

a sea, an ocean / a lake / (figuratively) an object covering over a large area, as in 血の海 (chi no umi, “pool of blood”) or 火の海 (hi no umi, “sea of fire”)

(chiefly women's speech) first person singular pronoun: I, me

adverbial form of よい (yoi, “good”) / adverbial form of いい (ii, “good”) / 良く, 善く, 克く: good, well / 良く: frequently, often / 良く, 善く: having astonishing ability or guts / 能く: (literary) able to

浴室: bathroom

well done; good job

(emphatic) Alternative form of よく (yoku)

to go; to come to one's place / to (a letter) be delivered / to depart / to rely (on a method) / (年が～) to age / (うまく～) to go well / イく: (slang) to have an orgasm, to come, to cum