The Little Thing About My Friend Always Getting Sick

To cure my frail, frequently ill best friend, I left my home behind and traveled alone to study at the Clock Tower in England. Now, I've completed my studies and returned. Though a thousand years too late. * My take on an invincible male lead * If it's not sweet, you get your money back * The CP is most likely Muzan, though I can't rule out the possibility of my fiance 5t5 or the unexpected newcomer Sukuna stealing him away * Muzan →→→← A Chan * It's not a comedy, but it might be a little funny Theme: Illnesses need treatment