- Shoujo-Ai Subplot
- Shounen-Ai Subplot
- Showbiz
- Shy Characters
- Sibling Rivalry
- Sibling's Care
- Siblings
- Siblings Not Related by Blood
- Sickly Characters
- Sign Language
- Singers
- Single Parent
- Sister Complex
- Skill Assimilation
- Skill Books
- Skill Creation
- Slave Harem
- Slave Protagonist
- Slaves
- Sleeping
- Slow Growth at Start
- Slow Romance
- Smart Couple
- Social Outcasts (1)
- Soldiers
- Soul Power
- Souls
- Spatial Manipulation
- Spear Wielder
- Special Abilities (1)
- Spies
- Spirit Advisor
- Spirit Users
- Spirits
- Stalkers
- Stockholm Syndrome
- Stoic Characters
- Store Owner
- Straight Seme
- Straight Uke
- Strategic Battles
- Strategist
- Strength-based Social Hierarchy
- Strong Love Interests
- Strong to Stronger
- Stubborn Protagonist
- Student Council
- Student-Teacher Relationship
- Subtle Romance
- Succubus
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