Kusanagi Kei, a high-school student living with his aunt and uncle, has an encounter with a female alien. This alien is revealed to be a new teacher at his school. Later, he is forced to marry this alien to preserve her secrets. From there, various romantically-inclined problems crop up repeatedly.

Alternative title:

• Please Teacher
• Onetei (Japanese)
• Por Favor Maestra (Spanish)

Onegai Teacher (TV):

• 1. Tell Me, Teacher
• 2. I Can't Get Married Anymore
• 3. This Isn't Right, Teacher
• 4. Actually, I Think I Love You
• 5. For That, Teacher, I...
• 6. Let's Begin After We Start
• 7. Don't Cry, Teacher
• 8. Long Night
• 9. Let's End It Now
• 10. But...
• 11. Teacher
• 12. One More Time, Teacher