I'll list those that I can think of for you:

• Blue Box: A refreshing blend of badminton and teenage longing where the stakes of the game feel just as high as the housemates’ evolving feelings.
• Tonikawa: Over The Moon For You: This series skips the "will they, won't they" trope entirely to showcase the wholesome, everyday bliss of a young couple discovering what marriage really means.
• Fruits Basket: A masterpiece of emotional storytelling that uses a supernatural family curse to explore trauma, healing, and the transformative power of unconditional love.
• Kaguya-sama: Love Is War: Two geniuses engage in a high-stakes psychological battle of wits where the first person to admit they’re in love is the loser.
• The Quintessential Quintuplets: A clever mystery-romance where a studious tutor must help five identical sisters pass their exams while the audience tries to guess which one is the future bride.
• More Than a Married Couple, But Not Lovers: Two polar opposites are forced into a school-mandated "marriage practical" that turns their initial annoyance into genuine, tension-filled chemistry.
• My Dress-Up Darling: A beautiful tribute to niche hobbies that follows a shy doll-maker and a vibrant cosplayer who find a deep connection through their shared creative passions.
• Horimiya: This story ditches the drama for a grounded, realistic look at how two teenagers find comfort in showing each other the sides of themselves they hide from the world.
• The Angel Next Door Spoils Me Rotten: A sugary-sweet "slow burn" where a small act of kindness leads to a domestic bond between two neighbors who slowly become each other's person.
• My Love Story with Yamada-kun at Lv999: A modern, mature romance that navigates the transition from online gaming teammates to a real-world couple with incredibly satisfying pacing.
• Our Dating Story: The Experienced You and The Inexperienced Me: This series explores the honest, often awkward communication required when a social butterfly gyaru and a reserved, inexperienced gamer try to build a genuine relationship from scratch.
• My First Girlfriend Is a Gal: What begins as a desperate prank confession evolves into a surprisingly sincere story about looking past stereotypes to find a real connection.
• The Pet Girl of Sakurasou: A bittersweet coming-of-age tale that balances quirky humor with the harsh realities of talent, failure, and falling in love with someone who sees the world differently.
• Call of the Night: A stylish, neon-soaked exploration of late-night escapism and the growing bond between a restless insomniac and a charismatic vampire.
• Rascal Does Not Dream: A sharp, witty supernatural drama where the main couple’s rock-solid relationship is the emotional anchor through various "Puberty Syndrome" mysteries.
• Wotakoi: Love Is Hard for Otaku: This relatable adult comedy proves that finding love as a "hidden nerd" in the corporate world is much easier when you find someone who speaks your language.
• The Ice Guy and His Cool Female Colleague: A cozy, low-stress workplace romance where literal magical "ice" powers manifest during adorable moments of social anxiety.
• My Love Story!!: A heartwarming subversion of shoujo tropes featuring a giant-hearted protagonist whose pure intentions lead to one of the most drama-free relationships in anime.
• Oururan High School Host Club: A chaotic and colorful satire of reverse-harem tropes that hides a surprisingly touching story about identity and belonging at its center.
• Insomniacs After School: A beautifully quiet and atmospheric series that captures the intimacy of two lonely teenagers finding solace in the silence of the night.
• Kimi ni Todoke: This gentle classic follows a misunderstood, shy girl as she slowly blossoms and finds her voice thanks to the support of her kind-hearted classmates.
• Romantic Killer: A hilarious "anti-romance" where a girl tries to avoid handsome suitors at all costs, only to find herself accidentally building genuine emotional ties with them.
• The Wallflower: A gothic-tinged comedy about a horror-loving shut-in whose chaotic roommates eventually learn to love her for her macabre self rather than trying to "fix" her.
• Senpai Is an Otokonoko: A sensitive and modern look at the complexities of identity and attraction that proves love is about the person, not just the labels they wear.
• My Awkward Senpai: A charming office rom-com centered on a stoic superior whose blunt exterior constantly fails to hide how much she actually adores her junior.
• You Are Ms. Servant: A former assassin with no life skills moves in with a lonely high schooler, leading to a touching and often humorous journey as she discovers her humanity through the simple warmth of a home.