My Campus Belle Girlfriend Breaks Up with Me, and My Bankai Stuns Everyone!

[If you have a cheat, use it] + [Decisive and ruthless] + [No holding back on power levels] + [No goody-two-shoes] + [Kills all the way to the end] He transmigrates and awakens the weakest healing Zanpakuto, “Amaguri Naa”? The whole school laughs at him! His girlfriend breaks up with him on the spot! His instructor shakes his head and sighs! Just as Lin Yu despairs [Ding! The Strongest Shinigami System has successfully bound itself to you!] [Beginner’s Gift Pack: Unlocks “Zangetsu (Shikai)” outright, along with some of Kurosaki Ichigo’s combat experience!] What? Killing monsters can also drop “Zanpakuto fragments”? Collect enough, and he can unlock other Shinigami’s Zanpakuto, directly in Bankai form?! [Ding! Killed 1 Hollow Hound. Obtained 5 “Sarutobi” fragments, Spirit Power +10!] [Ding! A Blade Mantis is attacking! Crisis mission triggered! Reward: 20 “Senbonzakura” fragments!] As the terrifying “Blade Mantis” tears through the defenses and everyone falls into despair, Lin Yu, who everyone thinks is just a “medic,” silently draws Zangetsu... “Bankai: Tensa Zangetsu!” A black crescent moon blazes across the sky! Everyone is stunned! Su Muqing: “??? Is this really the Lin Yu I know?” Zhao Hao: “Impossible! He’s a healer!” From then on, Blue Star has a “healer” who wields all kinds of Bankai. “Today I’ll use Senbonzakura Kageyoshi to clear out the little monsters, tomorrow I’ll roast beasts with Ryujin Jakka, and the day after I’ll use Kyoka Suigetsu for some tactical tricks... Man, I have too many swords. Which one should I use?” [System Notification: Host successfully showed off. Emotion Points +1000! Reward: 50 “Zanka no Tachi” fragments!]