When Yakumo is feeling a bit down after going through a hectic day (which included her first encounter with Hanai), Tenma suggests doing something different for dinner. Yakumo reads her mind and hears Tenma thinking, "I don't know what's wrong, but I'll cheer her up!" A good big sister right there.
In episode 15 after Mikoto rips her dress chasing after Eri, she goes to Hanai's dojo to change clothes. She tells him she tripped but he doesn't believe her. When Harima shows up to try and return Mikoto's jacket and purse Hanai misunderstands and think Harima did something to Mikoto. The sheer look of surprise on his face followed by the rather vicious way he challenges Harima to a fight because he even thinks he attacked his friend had this troper all fuzzy inside.
Eri and Harima dancing together at the closing of the Sports Fest.
Harima and Tenma's "date," especially the end.
From the season 1 finale.
Tenma: Am I dreaming?
Karasuma: We all are. We are in a dream called youth. Someday we'll wake up from it. But the memories will stay with us forever.
Hanai getting Yuuki home, and the scene with the sunset.
Harima mistakenly writing his and Eri's names on a love charm at the Kyoto trip. The look on her face when she finds the charm is priceless.
Akira's story about the village girl (Yakumo) and the hunter (Harima).
Nishimoto comforting Mai when she thought her father was lost at sea.
Harima and Eri sharing a blanket when they took shelter in a temple.
Chapter 212, Tenma's attempt to write an apology to Eri on the snow, and Eri's smile at the end of the chapter.
Tenma, as a child, encouraging a sakura tree to bloom one last time before it gets chopped down.
When it's finally revealed that Karasuma really did love Tenma. The way he describes his love for Tenma was so endearing. It made this Troper cry happy and sad tears.
Karasuma: One year. I asked God...I asked God to let me be free for just one year. Somehow, some way...I wanted to live my life without anymore regrets. One year. I decided that after that year, I would lose all those thoughts and ideas...But I promised myself one thing...I promised that I wouldn't fall in love with you. But...I couldn't keep that promise. Just looking. It's what I had decided. But I couldn't do it. Tsukamoto-san...I love you. I love you more than anything else in the world. I love your smile. It brings me the most happiness in life. I love the way you talk. It echoes from the bottom of my heart. I love the way you cry. It makes me want to protect you that much more. I love the way you sulk. It makes me notice my mistakes. There's no one that I'm more connected to in this world. No one. You're a bit careless and sometimes selfish but...with all of that together-I love you. You're completely pure. That's everything I think about you. The one whose touch I want to feel the most. Even if you know I'm hurt, even if you're scared...Please don't hide from me. Please believe in me through it all...It will put me at ease. I love you..I love you...I love you...I love you. Let me touch you. Let me feel your touch. Save me.
Karasuma instinctively protecting Tenma during the pie fight at the reunion.
Harima and Eri becoming engaged.
The very last chapter of School Rumble Z, where Yakumo is giving a speech to the graduating class and starts to tear up when she recounts all of the good memories and how much she'll miss them. Tenma rescues her by taking the mic and telling her that she did a good job. Then, Harima wheels the ill Karasuma in and tells him, "Hey, look closely up at the stage. That is the girl both you and me fell in love with. She's a great girl, don't you think?"