- Abandoned Children (210)
- Ability Steal (61)
- Absent Parents (194)
- Abusive Characters (248)
- Academy (395)
- Accelerated Growth (105)
- Acting (373)
- Acupuncture (21)
- Adapted from Manga (33)
- Adapted from Manhua (2)
- Adapted to Anime (302)
- Adapted to Drama (246)
- Adapted to Drama CD (131)
- Adapted to Game (24)
- Adapted to Manga (995)
- Adapted to Manhua (292)
- Adapted to Manhwa (234)
- Adapted to Movie (50)
- Adapted to Visual Novel (12)
- Adopted Children (121)
- Adopted Protagonist (113)
- Adultery (100)
- Adventurers (423)
- Affair (100)
- Age Progression (271)
- Age Regression (181)
- Aggressive Characters (67)
- Alchemy (220)
- Aliens (103)
- All-Girls School (24)
- Alternate World (301)
- Amnesia (259)
- Amusement Park (5)
- Anal (54)
- Ancient China (678)
- Ancient Times (445)
- Androgynous Characters (91)
- Androids (48)
- Angels (96)
- Animal Characteristics (147)
- Animal Rearing (38)
- Anti-Magic (8)
- Anti-social Protagonist (74)
- Antihero Protagonist (201)
- Antique Shop (13)
- Apartment Life (31)
- Apathetic Protagonist (80)
- Apocalypse (256)
- Appearance Changes (171)
- Appearance Different from Actual Age (171)